Some stuff with issues has already seeped in.
For other stuff related to Windows Vista and ThinkPads, here's a relevant Google search.
Things to doThe Microsoft TechNet resource page on wVista SP2 is the best place to start, because it has all the information at a user's fingertips.
Avoiding automatic updating to SP2The resource page features specific download links and a Service Pack Blocker Tool. The latter is useful if a user wants in due course to make a specific wVista computer ready for SP2 deployment by first getting all the necessary drivers and software updated. The postponement entails blocking automatic download and install of SP2 via Windows Update, in a similar manner to Internet Explorer 8 Blocker Tool.
Predeployment work is very importantBefore performing the update process itself, I did alot of predeployment work beforehand on a ThinkPad R60e.
Users are recommended to download and run the System Update Readiness Tool to see if there are any inconsistencies.
Doing all this work is laboriously recommended by Microsoft itself. It's best to wade through all of the article, so as not to miss important tips.