In a bizarre admission, a security expert at Microsoft this week said that some malware simply can't be beaten and that sometimes the only way to fix an infected PC system is to wipe it out and start over. "When you're dealing with rootkits and some advanced spyware programs, the only solution is to rebuild from scratch," said Mike Danseglio, a program manager in the Security Solutions group at Microsoft. "In some cases, there really is no way to recover without nuking the systems from orbit." That last bit, of course, is a reference to the movie Aliens, and the phrase has entered the popular lexicon as a reference to wiping out and starting over. Needless to say, this topic crops up in discussions about Windows fairly regularly