Angels have the Phone Box
I just had the strangest thing happen. Firefox has been wanting to update for a while, (I have it set to manual), so I finally let it go to v49. Then bam! - problems. Nothing will download, pages have scripting problems, some have difficulty loading, not responding errors - even the bookmarks would not export - all like an infection. Opera was working fine though.
So I manually saved my profile, and manually updated to v50, thinking that v49 had bugs. Nope, same thing. So I uninstalled it completely. Ran ADWCleaner and it found a bunch of HKLM\SOFTWARE keys, which, when searched, are positive for something called TROJ_MULDROP.AC! WHAT? From a FF update? Everything was working fine until I updated FF, so it has to be.
Amazing.......what a waste of an hour........