I had some problems with ESET, but I finally got it working. I had to run it twice but I don't have a log (explanation below). Both times I ran Firefox as administrator and deactived EmsiSoft's and Avast!'s realtime for the duration.
First time: Firefox was acting a little weird. It didn't load my bookmarks or exceptions or anything, as if it was like a fresh install. Also when I downloaded the installer for ESET, it wasn't in my Downloads folder. I downloaded it 5 times but I couldn't get it to open the file location for me. Anyway, I finally just ran the installer from inside Firefox. The ESET scan worked normally and found 1 threat, but when I saved the scan log I couldn't find it. Anyway here is the threat (I'm typing it out):
C:\Program Files (x86)\Dell Backup and Recovery\Components\DBRUpdate\hstart.exe
and it flagged it as Potentially Unsafe Application, variant of Win32 HiddenStart.A
I believe it's likely a false positive, but I quarantined it and will let you decide if I should restore it. That was all it found.
Second time: I tried to run it again to see if this time I could save the scan log. This time, Firefox was behaving normally. The installer saved to my download folder as usual. I ran the scanner and it does register that it had been run on this computer before; I just can't find it. Anyway, this time it showed no threats but if I check the quarantine, the questionable item is still there, so I can restore it if need be.
Please advise on this item, and thank you for your help and patience.