Upgrade Rulings

Aardvark
Note that the card text explicitly breaks the rules by allowing you to rez this card in response to an action of the Runner's, namely using a worm. (Official Netrunner Rulings, 4/21/97) 
As with other "you cannot do this" effects, the Runner is flatly prohibited from using worms during runs on that fort, even if the worm would normally require the Runner to use it during that run. (Official Netrunner Rulings, 4/21/97)

Bizarre Encryption Scheme
ERRATA: Reword as follows: "Bizarre Encryption Scheme may only be installed in a subsidiary data fort. Runner does not score any agenda (or agendas) that he or she accesses from this fort; return the agenda to the fort instead. Runner scores the agenda at the start of his or her next turn if it is still in the fort." (Sparky, Netrunner-L, 10/11/96) 
If you re-access Bizarre Encryption Scheme on a second run, the whole card text takes effect again and you can't score the agenda, but if you trash it, then run again, you can score the agenda. (Sparky, Netrunner-L, 7/25/96) 
Under the errata, if the agenda leaves a Bizarrely-Encrypted fort, Bizarre Encryption Scheme loses track of the agenda, and the Runner does not score it. (Sparky, Netrunner-L, 9/13/96) 
An agenda scored at the beginning of the Runner's turn in this way is considered neither stolen nor accessed. Thus, if the agenda is a Fetal AI, then, at the beginning of the Runner's next turn, the Runner will score the Fetal AI without any obligations--no Net damage, no 2 bits to pay. (Skipper Pickle, NR-L, 3/16/98)

Chester Mix
This ability reduces additional costs imposed on installing the ice, such as by Jenny Jett or Restrictive Net Zoning. (Official Netrunner Rulings, 4/21/97)

 Crystal Palace Station Grid
Since a Runner can use Pile Driver to break "up to four" subroutines on a piece of ice, the Runner may choose to pay the extra bit only for those subroutines he or she wishes to break. (Netrunner FAQ v.1.0, 5/22/96) 
Under Dropp's corrected wording (0: Break all subroutines...) the Runner cannot choose to break only some of the subroutines on a piece of ice. The additional one-bit payment must be made for all or none of the subroutines. (Netrunner FAQ v.1.0, 5/22/96)

Dr. Dreff
ERRATA: Dr. Dreff should say "Whenever the Runner passes the last piece of ice on this fort or declares a run on it when it has no ice,...." rather than referring to "successful runs." (Sparky, Netrunner-L, 8/9/96) 
If the run is being made on a fort other than the one from which cards are to be accessed, Dreff may be used if he is installed in the fort on which the run is being made. If Dreff were installed in the fort from which cards are to be accessed, he could not be used. So if you want Dreff to defend you from Shredder Uplink Protocol, you need to install in him in the Archives; Dreff in HQ can't help you against Shredder. (Sparky, Netrunner-L, 8/9/96) 
If an effect can remove the ice from play before Dreff trashes the ice (e.g., Marionette), Dreff loses track of the ice and does not trash it. (Sparky, Netrunner-L, 10/31/96) 
When Dr. Dreff forces the Runner to encounter ice, that ice is not considered "rezzed" (e.g., the Corp could not gain 3 bits by having Dreff force the Runner to encounter Misleading Access Menus). (JD Wiker, Netrunner-L, 2/25/97) 
Ice played via Dr. Dreff is not actually installed anywhere, so there's no such thing as other ice being "outside" it; for instance, if Dreff forces the Runner to encounter a Mastermind, the Mastermind will do zero brain damage and have a strength of zero (unless it is some other ice-strength modifier is in play), regardless of how many layers of ice are installed on this fort. (Tom Wylie via JD Wiker, Netrunner-L, 3/11/96) 
The Runner never approaches the ice but goes straight to encountering it, so she doesn't have the chance to play abilities before the encounter. (Official Netrunner Rulings, 4/21/97) 
If a card refers to the ice "on" the fort, it is referring to ice installed on the fort. Effects that modify or target ice "on" a fort cannot modify or target ice that Dr. Dreff forces the Runner to encounter. (Skipper Pickle, Netrunner-L, 11/11/97)
The sleepy ice says ‘…the cost to rez is reduced by 5…’. Dr Dreff says ‘…pay half of that card rez cost…’. Since the rez cost is the number shown on top right of a card (as explained on pages 11-12 of the rulebook), and only that, rez cost differs from ‘cost to rez’ which means ‘if you want to rez, do that’. With Dr Dreff, the ice is not rezzed (it is just encountered), so you don’t trigger the reduction of rez cost.
The sleepy text just affects efforts to rez the ice, not ‘pay bits equal to card’s rez cost’ in general. (Tom Wylie 11/12/99)
You can dreff Dumpster on the archives because Dumpster’s restriction is on ‘installation’ only, and Dr Dreff does not install the ice.(Tom Wylie 11/12/99)

 Jenny Jett
ERRATA: Jenny Jett should say "When Runner passes the last piece of ice on this fort, if any...", rather than referring to "successful runs." Jenny may not be used if the run was made on a fort other than the one from which cards are accessed (e.g., Shredder Uplink Protocol). (Sparky, Netrunner-L, 8/9/96) 
If the run is being made on a fort other than the one from which cards are to be accessed, Jenny Jett may be used if she is installed in the fort on which the run is being made. If Jenny were installed in the fort from which cards are to be accessed, she could not be used. So if you want Jenny to defend you from Shredder Uplink Protocol, you need to install in her in the Archives; Jenny in HQ can't help you against Shredder. (Sparky, Netrunner-L, 8/9/96) 
Since Jenny Jett "installs" ice, that ice is affected by effects which modify the normal cost(s) to install ice. (JD Wiker, Netrunner-L, 1/24/97)

 Jerusalem City Grid
See notes on Data Masons.

 Lesley Major
ERRATA:Lesley Major should say "Use this ability only when Runner passes the last piece of ice on this fort or declares a run on it when it has no ice,...." (Skipper Pickle, Netrunner-L, 11/11/98)

 Lisa Blight
Cards are trashed face-down. (JD Wiker, Netrunner-L, 1/20/96)

 Marcel DeSoleil
Cards are trashed face-down. (JD Wiker, Netrunner-L, 1/20/96)

 Namatoki Plaza
If Namatoki Plaza leaves play, deal with the effects immediately. (Tom Wylie via JD Wiker, Netrunner-L, 2/4/97) 
If this card is trashed, leaving the fort with too many nodes and/or agendas, the Corp chooses which of those cards are trashed. (Official Netrunner Rulings, 4/21/97)

 Networked Center
See notes on Artificial Security Directors.

 New Galveston City Grid
When the Runner trashes multiple cards in a fort, all of them are trashed at the same time; thus, New Galveston City Grid still increases the cost of everything else being trashed. The only benefit of sequential trashing is that the Runner can determine the order in which the cards hit the Archives. (Sparky, Netrunner-L, 7/10/96)

 Obfuscated Fortress
All bits that you spend during the run count against your limit, regardless of the source of those bits. (Official Netrunner Rulings, 4/21/97) 
At the start of a run on an Obfuscated Fortress, the Runner may "announce" a number of bits greater than the amount currently in his or her bit pool. During this run, the Runner may spend bits from sources other than the Runner's bit pool (e.g., he or she may use bits from Stealth sources or from Hidden resources). When the run is complete, if the Runner did not spend all of the bits that were previously announced, Obfuscated Fortress will cause the Runner to lose only bits that are in his or her bit pool; bits on his or her installed cards cannot be lost in this manner. (Skipper Pickle, Netrunner-L, 9/12/98) 
Obfuscated Fortress generates a start-of-run effect that can be processed with other start-of-run effects. In the event that an Obfuscation takes place at the beginning of a run on a fort containing Obfuscated Fortress, and the run on that fort is then redirected (i.e., by Siren), then the Obfuscation remains in effect. However, if the run continues on another fort that contains an Obfuscated Fortress (and it is still the start of the run), the Runner may redeclare the number of bits he or she will spend on the run, and the previous declaration is no longer in effect. (Skipper Pickle, Netrunner-L, 9/12/98)

 Olivia Salazar
Olivia cannot rez ice that Dr. Dreff causes the Runner to encounter, since Olivia only affects "installed" ice. (JD Wiker, Netrunner-L, 12/17/96) 
Multiple Olivia Salazars would enable the Corp to rez more than one piece of ice in a fort for half cost, but could not be used in multiples on the same piece of ice in the same run; the first Olivia would rez the ice, and the others would get there too late. (JD Wiker, Netrunner-L, 12/19/96)

 Omni Kismet, Ph.D.
The Corp can use Omni Kismet, Ph.D.'s special effect after the Runner has activated Smarteye to expose a piece of ice, switching the exposed ice for a piece of concealed ice, which the Runner cannot expose. (Sparky, Netrunner-L, 11/11/96)

  Pavit Bharat
Yes, Pavit Bharat uninstalls himself too. (Sparky, Netrunner-L, 9/13/96) 
ERRATA: Pavit Bharat should say "Rez Pavit Bharat only when Runner has passed the last piece of ice on this fort or declared a run on it when it has no ice." (Skipper Pickle, Netrunner-L, 11/11/98)

 Red Herrings
If the Runner is using an effect that allows the trashing of any card (e.g., Kilroy Was Here), Red Herrings does not prohibit a Runner from trashing an agenda. (Sparky, Netrunner-L, 6/27/96)

 Research Bunker
See notes on Artificial Security Directors.

 Rio de Janeiro City Grid
The Corp still rolls for Rio even if effects allow the Runner to pass a piece of ice "automatically" (e.g., Inside Job). (Sparky, Netrunner-L, 6/7/96)

 Roving Submarine
ERRATA: "This fort may be run only if you installed a card or added an advancement counter to a card inside or on this fort during your last turn." (Sparky, Netrunner-L, 7/10/96) 
Cards installed during the Runner's last turn (e.g., with Pavit Bharat) do not allow the fort to be run. (JD Wiker, Netrunner-L, 1/20/96)

Self Destruct
@ In order to be used Self Destruct has to be rezzed before the Runner decides to access cards. When the Runner accesses Self Destruct it can be trashed to use its effect. The Runner has to survive the effect before he can trash any card in the fort or score any agenda. If a card is trashed by Self Destruct it goes to the archieves before the Runner can trash or score it. (Sensei, 11-03-2000)

 Simon Francisco
ERRATA: Should read "When accessing cards in this data fort, access one less card stored in this data fort." The ability is not triggered by accessing Simon. (Sparky, Netrunner-L, 9/11/96) 
Simon Francisco does not prohibit you from accessing installed cards. (JD Wiker, Netrunner-L, 1/3/97)

Sterdroid
Sterdroid can double the strength of an ice that is not installed on the same fort. (Tom Wylie 11/12/99)

 Washington, D.C., City Grid
See notes on Artificial Security Directors.

 Weapons Depot
See notes on Artificial Security Directors.