I do not know what caused this. It has been present for the last three days. I was browsing when it happened and I also get the alerts frequetly after booting and arriving at my desktop. I am running Windows XP Media Edtion. Suddenly I started getting errors that read svchost.exe error 0x00000000 can not be written at 0x00000000. This alternates with the more commonly 0x7c9105f8 cannot be written at 0x00000010. I have read everywhere I can and found that somehow it is an automatic update problem with Microsoft. I called Microsoft (India) was transferred to three different people. They finally installed a hotfix and directed me to housecall.trendmicro.com. I have run my stystem through the check several times. I have used Registry Mechanic, Reg Cure, Ccleaner. I have done a system restore to two weeks ago. No the problem is even worse. I was afraid I wasn't even going to be able to get into my browser to post this. I am flabbergasted. I have read that lots of people of had the error, but no real fix. Could some wonderful person help me with this? Thank you so much in advance. I have a Dell XPS 4000, 2 gigs RAM, Creative Sound Blaster X-FI , 40 gig, etc... I'm desparate.