I ran into an issue with 1.6 over the weekend. Someone sent me a picture via BlackBerry Messenger, and I tried to upload it to Facebook from within BBM, and it wouldn't. It kept timing out. I then went into my pictures from the device and was able to upload the same picture fine.
__________________ The difference between stupidity and genius is that genius has its limits. When you take things for granted, the things you are granted, get taken. Even a mosquito doesn't get a pat on the back until it starts to work. Too many people miss the silver lining because they're expecting gold. [BES 5.0.3 / GroupWise 2012 HP2]
I would try to keep with blackberry since they built the app. Maybe hit their forums and see if anyone else has this issue, so a blackberry (RIM) mod could escalate for you! I have had similiar issues, but they have been more geared towards a funny acting data connection and coverage. Check that as well!