I have set the option "Check for updates but let me choose whether to download and install them". This is to choose the updates that are really important and install them after few days. So, I have time to check if there is any issue with any updates.
Few weeks before there was an update from MS http://support.microsoft.com/d.....kb/940510. This update was showing in the Windows update list as important.

Now it has does not showing there. I am wondering where did it go?

I checked the update history it is not there and I did not install any updates after 02/17/08.

Did MS remove it? Any idea??

Santo, I would not worry about that. It's an attempt by MS to stop illegal Vista copies. It will come back with SP1 anyhow. Read this:
http://itsvista.com/google-sea.....D%3A11#182

I did not install it. It's important to MS, not to us.

So what's wrong with installing an update that checks if you are legal or not?

I agree what whs says. But MS has disabled many of the original Vista's because of a mistake in their server. They even said only 12,000 customers were affected.. which is not true... this news was there in computerworld.com.
Even though I have factory installed Vista.. I don't want to screw up my notebook because of some updates.. so I always wait for few days.. and check in forums and tech sites.. about any known issue.. only then I install..

I am actually looking forward to the day when all of my RAM is being used. Made it only to 44% max. - after all, I paid for every byte of it.

ya, for paging files.