I've heard about lots of people that installed it with no problems. Me, I'm waiting for no particular sound reason... I read about some problem with AMD processors (I got Intel) that should be solved already (?), then got tired of googling after half a minute and procrastinated the upgrade... But I thought it was included in automatic updates a long time ago, at least I know that if you manually go to Windows/Microsoft Update you're prompted to install SP3 as a priority update--without need to look into the optional updates.
However, there are some precautions you MUST take (besides backing up anything crucial including a system restore point or something at least equivalent) before installing SP3, or any other big update for that matter (I know some of you already know but still):
- Log off from all accounts except the admin one you'll be updating from. A second open account may cause many Windows updates (not just service packs) to fail.
- Disable the resident protection of your antivirus or any other security software that protects system files from changes. (I bet a lot of screwups now and back when SP2 were caused by not doing this...) This is safe as long as installing SP3 will be the only thing you'll be doing--this kind of protection is just reactive anyway. When you're done and hopefully everything's working, enable those programs back.
http://technet.microsoft.com/en-us/w...c164204.aspx#2
By the way what about Vista SP1, anyone?