So i recently purchased the blackberry pearl 8130 and am with virgin mobile.
For some reason today both blackberry messenger conversations and facebook notifications disappeared. It has been working fine before and in the morning, and then just recently i picked it up and it all was just..gone(except the initial getting started notification on facebook). I know its not a memory problem as it is a new phone and i barely have anything on it,
Sounds like a classic memory problem. Did you check your file free? I think you should try removing facebook. It comes up as the cause to a lot of symptoms as you are describing.
as i mentioned i just got it last week and there is a lot of free memory ..well over 15, 000, 000..and i use the facebook application a lot so its not something i would want gone.
Just because you have 15mb free doesn't mean there isn't a memory problem. You should at least remove the FB app to see if it is the problem or not. I have seen this issue dozens of times, and usually it is FB.