When I run CCleaner, my Firefox add-ons disappear.
 

Dear GFF,

I can't figure out why. Could it be a virus? I ran AVG and it found nothing. Everything else is ok, it's just that after I run the program CCleaner, when I start Firefox my extensions/add-ons disappear. Could it be magic?

Sincerly yours,

Troubled Laptop User

If you look in the options on the ccleaner there is a checklist for firefox, see if you can look at something related to add-ons. if that doesn't help and you're doing the register cleaning it's probably removing it there. I haven't used ccleaner in a while so sorry if this doens't help.

Do you have the latest version?
You could also try going into the options and exclude the extensions folder that holds your addons in. It should be in C:\Documents and Settings\YOUR USER NAME\Application Data\Mozilla\Firefox\Profiles\RANDOM.default

The ".Default" folder gives a random name on each comp,so you'll have to browse and find the location yourself