System Optimizer -- two bugs, and some occasional (latent) bugs Vista BE (not SP1)
For Vista BE (not SP1), I'm assuming these represent the initial registry values before the application of the tweaks, except as denoted by (*) or (***). Each (*) adds an entry name and value. The single (***) adds an empty key:
Tweak registry items extracted from ...\Backups\_SystemOptimizer
; 1-1
"
""NtfsDisableLastAccessUpdate""=dword"
; 1-2
"
""NtfsDisable8dot3NameCreation""=dword"
; 1-3
"
""Win32PrioritySeparation""=dword"
; 1-4 -- this key is not in my registry. (*)
"
""DisablePerformanceCounters""=-"
; 1-5 -- this key is not in my registry. (*)
"
""MaxNegativeCacheTtl""=-"
; 1-6 -- this key is not in my registry. (*)
"
""AutoEndTasks""=-"
; 1-7
"
""DisablePagingExecutive""=dword"
; 1-8 -- this key is not in my registry. (*)
"
""ClearPageFileAtShutdown""=-"
; 1-9 -- there is a probable bug in this tweak (**)
"
""Optional""=hex(7),00,6F,00,73,00,69,00,78,00,00,00,00,00"
; 2-1 -- this key is not in my registry. (*)
"
""NoLowDiskSpaceChecks""=-"
The tweak sets "NoLowDiskSpaceChecks"=dword
; 2-2
"
""AutoRun""=dword"
; 2-3 -- this key is not in my registry. (*)
"
""NoWinKeys""=-"
The tweak sets "NoWinKeys"=dword
; 2-4
"
""NoRecentDocsHistory""=dword"
; 2-5 -- this key is not in my registry. (*)
"
""NoSMMyDocs""=-"
The tweak sets "NoSMMyDocs"=dword
; 2-6 -- this key is not in my registry. (*)
"
""NoFavoritesMenu""=-"
The tweak sets "NoFavoritesMenu"=dword
; 2-7 -- this key is not in my registry. (*)
"
""NoRecentDocsMenu""=-"
The tweak sets "NoRecentDocsMenu"=dword
; 2-8 -- this key is not in my registry. (*)
"
""NoRun""=-"
The tweak sets "NoRun"=dword
; 2-9 -- this key is not in my registry. (*)
"
""NoSMHelp""=-"
The tweak sets "NoSMHelp"=dword
; 2-10 -- this key is not in my registry. (*)
"
""NoFind""=-"
The tweak sets "NoFind"=dword
; 2-11 -- this key is not in my registry. (***)
"
""""=-"
The tweak creates an empty key.
; 3-1 -- this key is not in my registry. (*)
"
""NoAutoRebootWithLoggedOnUsers""=-"
The tweak sets "NoAutoRebootWithLoggedOnUsers"=dword
; 3-2 -- this key is not in my registry. (*)
"
""NoRecycleFiles""=-"
The tweak sets "NoRecycleFiles"=dword
(*) Most of the time, this type of backup removes the associated entryname and value from the registry, which "undoes" the tweak. However, sometimes, when toggling one of these tweaks, the value in its backup is replaced by the tweaked value. When that happens, there is no longer a real backup, and the tweak can not be undone with System Optimizer. The situation, when it happens, is similar, but not identical, to (***) below.
Added note: I reproduced this tweak/no-tweak setting swap in some backups by applying 9 or 10 of the user tweaks one at a time, then "undoing" them all with a single Apply click.
(**) The 1-9 tweak sets the value of the Optional name to dword which is probably not correct …
(***) The empty key is added to the registry by the 2-11 tweak. Unchecking the tweak and clicking Apply fails to remove the registry key. As a result, the tweak is always checked the next time you start the System Optimizer tool until you delete the key manually. You also have to delete the 2-11 subfolder to avoid an internal error the next time you click Apply. This problem occurs every time, unlike the problem at (*) above, which only occurs sometimes.