I was just about to stop using Firefox on my Thunderbolt because I was chatting on AIM, but every time I switched back to Firefox, it took 5-10 seconds to load up. I found that it seems as if it's restarting the app whenever I use the recent applications in the notifications bar, but it opens up fine if I go to my home screen and open it from there. Is there a reason for this? Does anyone else have this issue?