I have the latest Facebook app and .1015 OS the problem is when I reset my device I have to relogin into Facebook and each time I login I got Facebook messages from 2007 and I cannot delete it all
I actually had the FB Messages problem too, I'm running .1015 as well. I simply unchecked the box under FB>options that shows FB messages in the BB messages folder. Given now I have to go into the FB app to clear messages, at least I can clear them out.