Drive has been locked by a disk utility

[badsiss2]

System Info: Windows ME 4.903000 E machine Etower 600is

When I try to do a defrag I get this message:

Windows cannot defragment this drive now because it has been locked by a disk utility. Quit any utilities that may have locked this drive, and then try defragmenting the drive again. ID No. DEFRAG00105

Mosy recently installed program was AdAware SE Personal which I removed but I am still unable to defrag.
Any help would be greatly appreciated.
Thanks

[FES]

Go to http://support.microsoft.com/kb/286810 and read about your problem.
Also, read about it at; http://www.computerhope.com/issues/ch000664.htm
Alternate Option: Click Start/Programs/Accessories/System Tools / and do a System Restore back to a previous point. This should fix your problem but highly suggest you read about it on the above 2 sites. They both have real good information. Good Luck.