Avast seems to have deleted Firefox?

[PaulB_UK]

Just surfing away normally, clicked a link - Avast starts going nuts "You have a Virus" - Delete - think it said it was a Netsky variant.  Further two alerts delete both, computer crashes and reboots.  On reboot I have no Firefox on my system.  The Firefox.exe file has been deleted. Pretty sure I was virus free before the alert.

[Will It Work]

Well, if it was Netsky, it would have come through your mail, and would appear at any time.

I'm surprised th eonly solution was to delete: usually there's an option to move to chest.  With that said, if it did/ hook your firefox.exe file, and you deleted it, it could be gone.

Assuming you used defualts, are the rest of the files, esp xul and jar files still in c:\Program Files\Mozilla Firefox ?

[RejZoR]

Well,Firefox is buggy and will sometimes lose all its settings,bookmarks and addons on cold reboot.

[PaulB_UK]

Thanks for the replys.  I did have a move to chest option but the recommended course of asction was to delete - which I did.  I've had a look and performed a search of the Firefox folder and there were no .xul files but there were a lot of .jar files there.

Second time this week I've lost my bookmarks on Firefox - luckily this time I had a backup.  Still haven't re-installed Firefox as yet as I'm running a full system scan with Avast. Can you exclude .mp3 files from the scan and should I?

[DavidR]

avast! doesn't delete files without:
1. detected infection.
2. User intervention choosing to delete or you having the pro version and set to delete silently.

If you were browsing and clicked a link and all hell broke loose, then it is likely to have been Web Shield giving the warning and it doesn't give a delete option, just Abort Connection to stop the infected page/item being downloaded.

Check the avast! Log Viewer and see if you can see more info on the alert.

There is a backup utility for firefox settings (foxbackup.exe), etc. but if you copy the profile folder that should do it