Colin,
A faulty memory stick could be the cause.
In that case the OP might want to download Memtest86
([url]http://www.memtest86.com/[/url]), the memory test utility recommended by
many (one of Charlie's favorites).
Direct D/L link for ISO version:
[url]http://www.memtest86.com/memtest86-3.4a.iso.zip[/url]
Direct D/L link for floppy installer: [url]http://www.memtest86.com/memtest34a.zip[/url]

I also think that the 600W PSU might be working at max capacity, let us not
forget that he has a 6400+ processor (this beast eats 125W!) and an 8800GTX
card (another watts eating device).
:)
Carlos


"Colin Barnhorst" wrote:
[color=blue]
> I have seen some of the gurus on memory that post in this ng comment that
> the results from the Microsoft diagnostic is not definitive and that a more
> exacting tester is needed if one is to eliminate memory as a possible cause.
> I have used Azureus on x64 Vista without the behavior you describe. I will
> leave the memory issue to the gurus in the hope that one will respond. In
> the meantime I suggest you take a look at this KB article:
> [url]http://support.microsoft.com/kb/936212/en-us[/url]
>
> "Quik" <Quik@discussions.microsoft.com> wrote in message
> news:380B1AAF-72DB-475C-8B3C-C6B5B97B0191@microsoft.com...[color=green]
> > Well I reinstalled Winamp, Azureus and Firefox and I had them running all
> > at
> > once now and the computer crashed again. It took longer to crash but it
> > crashed. I was looking at vista's resource monitor and it was telling me
> > almost 150 hard fails/min on the Azureus.exe process. I did a test with
> > Microsoft's Memory Diagnostic and I had 2 runs with it and 0 errors...
> >
> > It just happened recently though, I had the computer running for a month
> > and
> > a half without problems and its starting to give me problems now.[/color]
>[/color]