The Quickclean utitility removes some critical registry keys in Windows Me leaving the computer devoid of the System Restore feature. After running QuickClean, Windows Me users will not be able to restore, or even create, new System Restore points. McAfee is aware of the problem, but there currently isn't a patch available.
For some points on fixing and preventing this bug, go
here.
For some points on fixing and preventing this bug, go
here.