my menus disappear

  bbjjss 03:28 13 Nov 14

I use Firefox. My email is gmail. The dropdown menus on my gmail disappear before I can click on them, for example when I want to mark a message as unread. Could this be caused by a virus? My McAffee anti virus says I'm ok. If not a virus, what is the cause and the cure, please? Thank you.

  northumbria61 11:29 14 Nov 14

Take a look at some of the Mozilla Support Suggestions you may find something to help.

If using a wireless mouse try a wired one.

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