Trend Micro - Pattern 594 - XP 100% CPU Usage
Having just wasted to much time. I finally figured out why (not coincidentally) our corporate network started to expereince 100% client side CPU usage. Trend Micro pattern 594 has issues with XP. Windows XP Service Pack 2 machines with critical patches and PC-cillin Internet Security 2005 starts to experience high CPU utilization after updating to Pattern 594
Product: PC-cillin Internet Security
Solution ID: 24264
Created: 4/22/2005 6:23:14 PM
Solution: To resolve the issue:
Start the machine in safe mode:
If the computer is running, shut down Windows, and then turn off the power.
Wait 30 seconds, and then turn the computer on.
Start entering the F8 key. The Windows Advanced Options Menu appears.
Note: If the Keyboard Error message appears, restart the computer and try again.
Select the Safe mode option.
Press Enter. The computer will then begin to start in Safe mode.
Go to the ..\Internet Security 2005 directory then delete LPT$VPN.594.
Update to Pattern 596 in order to bring the machines up.
Reboot the computer and go back to Normal mode.
Update to Pattern 596.
The problem just started a couple of days ago.
The computer was working fine, and all of a sudden (after coming back from a coffee break), when I typed something on my browser, the letter input goes the other direction,
and the computer became slow to respond. I decided to power it off the hard way.
I restarted the computer, and the login takes a long time, maybe 1 hour, and I learned that the CPU usage has topped 100 percent and the system process was
eating up 95 - 99%.
Since the computer become so slow, I reboot it the hard way again and this time to safe mode. It appears to be ok: No usage problem. I restored back to previous checkpoint, but it didn't help. Then I started going through the system service process, and disable
a few services, and now I can login immediately, but when the desktop shows up, the system process is again eatting up all CPU power. All applications are taking
forever to get started.
I have used chkdsk, no disk problem.
I have used trendmicro's house call and no virus found.
I have cleanned up all cookies.
I did not installed any hardware/software
Does anyone have suggestion/solution?