My camera stopped working 2 days after I got it... that was back in 2010 of December. Still got it and still using it. A lot of these devices had a problem with the camera for some odd reason. If yours has been working the entire time prior to you flashing the SlimBean ROM, try flashing a different ROM or going back to Stock Rooted ROM. If it starts working then its either the ROM you downloaded has a bug or it was just corrupted. Try downloading it again and installing once more if you really like that ROM.