How to revert to 10.6.5 after installing 10.6.6?

Hey guys, is it possible to revert 10.6.6 to 10.6.5 without formatting? Or do I have to format my OS X?

Stop wasting this guys time by sending him to the speed FAQ.
He clearly didn't report having speed issues until 10.6.6 update.
Yes, and people have been blaming problems like these on system updates for as long as there has been a system to update. It's very ironic that people are now talking about reverting to 10.6.5 to get a stable system... just a couple months ago, all the talk was about reverting to 10.6.4 because 10.6.5 had "bugs". And before that, it was 10.6.3 that was stable and 10.6.4 that was not. And so on.
The fact that the problems appear after an update does not mean that they are caused by bugs in the update. An update like this changes hundreds or thousands of files, and if there's any corruption in the system or the hard drive's data structures, those kinds of changes can result in a destabilization of the system.
It is too early to say for sure that the 10.6.6 update has no problems. However, it certainly hasn't caused any for me or for a number of other experts on these forums. Blaming problems on Apple and waiting for them to fix it is not productive when the problem is not likely to be theirs.

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