I'm at the end of my rope and I'm hoping someone can lead me in the right direction. My MacBook Pro is infected with some sort of virus or worm which affects my system in a myriad of ways, but the first symptom is that my internet browser (I've seen it in both Firefox and Safari) will cease to remember passwords, won't allow me to bookmark sites, and eventually doesn't allow me to access sites which need a password to enter (e.g., gmail). I have erase/reinstalled more times than I can count and even did a quick drop at the Apple store under the impression it was a hardware issue because the techs couldn't find anything wrong with the software. My logic board and hard drive were replaced, but still have the same issues. Although I have not yet reinstalled MS Word, previously it has affected this program most drastically by not allowing me to save for a variety of reasons (not enough memory, can't find the route/path, etc.). I have reinstalled using time machine and also by individually adding files, but it has also affected my machine after a reinstall but before I've brought back anything from my external hard drive. Currently, I have Kaspersky running, but it seems to, at best, have slowed the evolution of the virus/worm. It hasn't found any malware, virus, or worm. I have looked everywhere and cannot find an answer, so I'm hoping this sounds familiar to someone reading this. The only other part of this I can think to add is that I suspect that this is a very old malware (mid- '90s) that I brought back from a university computer lab (through MS Word), as I've had constant issues since that point with a variety of computers. Suggestions? The Apple employees know nothing about any of this and refuse to accept that a Mac is susceptible to a virus or worm.