Unexplained folders added to yahoo account

[tanstaafl]

Something just added a empty "Damjan Murko - TV prodaja d.o.o66d2ac26" folder to my Yahoo IMAP account a couple of minutes ago. I checked the time/date stamp of the *.msf file to confirm it wasn't added before and I just noticed it. I logged into Yahoo webmail and confirmed it listed that empty folder too.

LGM in http://forums.mozillazine.org/viewtopic ... &t=3026112 stated that he just noticed a "Uncertain" account in Yahoo webmail.

Anybody else noticed unexpected folders added to their Yahoo account? My first thought was that account might have been hacked but I haven't gotten any bounced junk mail messages sent from that email address.