cavscan.exe uses %99+ of ram and freezes machine

Every time I try to run a drive or system scan…
first off you cannot close or cancel a scan. It will just hang at any percent of scan.
Currently when I run a manual scan, I have disabled auto scans as they just lock up, cavscan.exe uses up all available ram and freezes the machine. It wont close or be killed. I normally have to do a hard reset.
Oh and then it leaves tens of thousands of files in the temp directory. This particular time a few less than 15,000.
This problem seems to happen with xp 32 bit and xp 64 bit.
I am using the latest version of CIS.

Do you have other security programs running n the background? Try temporarily disabling them and see if that helps or not.

Please make sure that there are no left overs of previously uninstalled security programs around. Not all uninstallers do a proper job. And left over applications, drivers or services can cause all sort of “interesting effects”.

Does the problem still arise after having tried the above solutions? Are there one or more particular files where the lock up happens?