The rom is experimental, so you should know that before hand. You are a beta tester, like the rest of us, so if you can't handle it revert back to 2.1. I personally didn't like the shutdown options or the Apps2sd that was implemented because I could just change it in BB v0.2. If your phone is still rebooting I would just revert back to BB v0.2 if you have a backup.
I haven't had a single reboot since I deleted shutdown. Basically user error on my part by touching those keys at same time all too often.
Also, I use .2.1 daily and don't have any force close problems or any others for that matter. Must be luck.