I don't know if this is 8330 specific (just happens to be my phone model).
Why am I not allowed to use the BB Browser while in the middle of a phone call? For instance, I'm in the car the other day chillin' in the passenger seat talking to my brother on the BB using the standard 2 ear bud headset and he asked me a question that I could have quickly googled and told him the answer to. The phone won't let me do that. It said I had to end the call first (something along those lines). What gives? I'm a bigboy! I can multi-task!