radioregis12

Am using Win XP home & Yahoo as home page. As I switch on the following happens :- 1) Imfo bar appears in bottom right corner saying - 'you have ? emails' 2) double click & my yahoo mail page opens. Mail box on left says ? emails. 3) Then mail box tab says 'You have 0 messages' Max lost in one go was 12 emails, my basic question is HELP. Are they ghost emails or real & if real are they lost for ever? Even had one arrive today telling me sender's name & outline of contents, went to mail box & '0' Empty. They are not being redirected to either :- Spam or Trash boxes. I have re-booted the BT disc to re-est software, but no change. As I am running security :- AVG free, Norton email scanner / reader, Windows security. If any one can work this oput it would be a great help.