I have also had this problem for some time. The RPC svchost gradually leaks
memory until it crashes the machine. It is not a virus. The typical
suggestion is to hunt through drivers -- some people have fixed it by rolling
back graphics drivers of all things. I can actually prevent the problem by
disabling my ethernet adapter (leaving my wireless connected). However, I
have as yet not found a workable solution. What is clear is that the problem
is likely related to the others which have plagued the DCOM over the years
from Win2K to Server 2K3. I hesitate to dive in and throw a Win2K/3 fix on my
XP install, but seeing that my current setup demands that I use a wired
connection, my hand may yet be forced.

As a note, it typically takes several hours of uptime to crash the machine
(10 or so), but hibernating tends to exacerbate the issue. I have yet to
discover the reason.

"Razvan" wrote:

> Hello,
>
> I tryed to give you as much detail as possible.I have the dump files from
> the error,if there anywhere i can send them to be analized.
>
>
>
> > Has it TOUCHED the Internet?
> Yes it has...Windows Firewall is the guardian
>
> > Have you installed any downloaded application yourself - even if you
> > downloaded them previously and saved to external (to the system drive you
> > supposedly formatted) and installed from said external media...?
>
> Yes i have..but those were checked for viruses with NOD32 during backup and
> nothing was found
>
> > What specific version of Windows XP is it?
>
> Windows XP Professional 2002 SP3
>
> > What other patches have you installed other than SP3?
>
> Everithing that comes from automatic updates after a fresh install
> SP3 was installed manually from windows update website over the other updates.
>
> > What about hardware drivers from each specific hardware manufacturer
> > (motherboard chipset, network card, wireless network card, video card, sound
> > card, etc.)?
>
> Everithing is up to date(the fresh copy was installed around 20/04/2008.That
> is when i laste checked for drivers on each and every component)
>
> The notebook is an Alienware m9750 with 2GB RAM Core 2 Duo at 2.0Ghz, SLI
> GeForce 7950GTX.
>
> I have WinPCap driver that works at Layer 2 on my network card for packet
> analysis.
>
> USB modem is from ZAPP and the driver is for Core 2 Duo.It was released in a
> hurry aftre multi-core processors started to be popular.This device has been
> discontinued since 2006 i guess, so the driver is pretty old.
>
> > What about patches for any software you have installed other than Windows
> > XP?
>
> Office 2003 SP3
>
> > Do you utilize an administrative account for everyday use?
>
> Yes...with full rights.Home PC, does not belong to any domain controller.
>
> > What research have you done - what led you to performing a clean
> > installation?
>
> Research:
>
> Googled a lot for any similar symptoms.All i could find was the RPC issue
> with the Blaster worm dating from 2003.I remember blaster i was inffected
> with.I know its behaiviour,this is something else.
>
> Clean installation:
>
> At least once a year i do a clean install.Windows XP tends to run slower
> after long time of use.I do the regular cleaning and defragmenting and
> registry fixing,but it doesn't improve performance.It likes to grow in size
> over time and it takes longer to boot.I tryed both legal copyes and illegal
> copyes, last time i used a Dell installation Disk and used the activation key
> from one of the hundreds of laptops the company i work for has.It validated
> as genuine,but seemed to have lots of errors (interned explorer 6 and 7 would
> freeze very often like every 5 minutes, Opera did the same), including the
> one that i have now.So i swithced to the educational windows and license
> which suits me fine beeing a student.Everithing works flawlesly, besides this
> issue.
> >
> > --
> > Shenan Stanley
> > MS-MVP
> > --
> > How To Ask Questions The Smart Way
> > http://www.catb.org/~esr/faqs/smart-questions.html
> >
> >
> >