Delete VBouncerSpybot detected VBouncer on my computer. It couldn't delete VBouncer, but suggested restarting and trying again. It still couldn't delete VBouncer (even in safe mode!). I looked up VBouncer on the web. I found (find command) the file virtual bouncer.lnk in a VBouncer folder among temporary internet files. I couldn't delete it because it was running. With both IE and Spybot off, I deleted the folder.
Nonetheless Spybot still detected Vbouncer. On advice from listserves I deleted six copies of unwise.exe. unwise.exe was attached to all recently downloaded programs. After deleting all six copies, Spybot no longer detected Vbouncer, my operating system recovered its stability and I could run Norton Speed Disk (defragmenter) which had previously hung up.
Tip discovered during the process: Spybot runs faster and does more in safe mode!