Disabling UAC Slows Vista's Bootup Time?
link: original article - section: windows
Blogger Chris123NT is reporting that the LUAFV driver, which controls UAC in Vista, can cause latency issues if the controversial feature is disabled.
Apparently, once UAC is disabled, a registry tweak that disables the driver in question also needs to be applied if the user wants to have solid boot times back (improved boot times obviously vary from machine to machine). The problem occurs in both Vista RTM and the current beta build of Vista SP1 (6001.17042). This seems to me like yet another reason why it’s not a good idea to disable UAC, but I'm sure UAC haters will have a very different perspective.
It will be interesting to see how fast Microsoft will patch this problem, considering how important security is nowadays.
Note that the best boot times were achieved with UAC AND the LUAFV driver DISABLED.
Ryan’s Desktop - Vista SP1 17042
UAC Disabled w/o Tweak - 1 min 50 sec.
UAC Enabled - 1 min 30 sec.
UAC Disabled w/ tweak - 1 min 12 sec.
System configuration: 2.4 Ghz Dual Core AMD Opteron 165 , 4 GB DDR500 , Geforce 8500GT, Windows Vista Ultimate x64 SP1 RC1
Laptop - Vista RTM
UAC Enabled: 2 minutes 25 sec.
UAC Disabled w/ tweak: 1 minute 45 sec.
System Configuration: 1.6 Ghz Pentium Dual Core, 1 GB DDR2 533 , Intel Mobile Graphics 950. Windows Vista Home Premium RTM
My Test - Vista SP1 17042
UAC Enabled: 1 minute 38 sec.
UAC Disabled w/ Tweak: 1 min 04 sec.
System Configuration: XPS M1710, 2 GHZ Core2 T7200, 2 GB DDR2, 7950GTX
