You may have found a bug in sp2. I would try clearing the catroot2 folder.
http://support.microsoft.com/default...b;en-us;822798
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Mark L. Ferguson
..
"WhoCares" <> wrote in message
news:EACF6A21-BAFD-40E1-8FDC-...
> I'm running Vista Home Premium in Virtual PC 7. Just installed latest
> updates
> then SP1. Now restart Vista and check that no more updates available from
> MS.
> Now go to welcome center, show details, system restore and then click on
> restore button when it becomes active.
>
> At this point I consistently get a message that system restore has
> detected
> pending updates and I should restart windows first. I do not detect any
> remaining pending updates even after several manual restarts but still get
> this message.
>
> The only updates I have never installed are the language packs.
>
> This was an issue before the latest update and sp1 installs.
>
> How does one tell if pending updates are actually quequed up?
> Is system restore just simply screwed up?
> Is it some strange quirk because Vista is running in a virtual machine?
>
> Luckily I've never actually used restore on any of my systems, haven't
> needed to. I was just fooly around to see how it worked. Wasn't intending
> to
> actually do a restore.