Chat for facebook app problem
 

My gf uses a blackberry bold 9650 and she uses this chat for facebook lite app and on her facebook if you log into the computer you will see random chat windows up all blank. Why is this? She claims it always does this when she logs onto the computer. And a lot of times she will go to bed and it will say shes on facebook chat for like several hours after. Happens quite often. Is this app unstable? Thanks