Hi picca
Quote:it always showed a file name 'index.dat' in different folder, is currently in use, and cannot be deleted
This is fine,
Are you using Ad-aware SE ? If so when you install it did you uninstall Ad-aware 6 first ?
If thats the case,
You'll want to go through and check and make sure it was all removed,
Probably easiest way to do this is to remove Ad-aware and any files/folders related to it then reinstall Ad-aware SE.
Need you to look for it and be sure you get it all, check for the Lavasoft folder ( this would be where you saved it to), any links in the start up menu, desk top icons.
For a good measure click Start> Find Files/Folders>Type in aaw into the box ( be sure your checking C: the files and folders should show up in the bottom window> Right click on them and choose delete, Empty your recycle bin
Then go back to the
Topic I posted earlier and download and install it again please, Be sure and check it for updates, and run a scan with it,
Lets us know how you make out please