Hey all, Since a few weeks my MBP (Mid 2010 15", Lion) is experiencing kernel panics, at seemingly random times. I've been through all the guides to solve these, but it's really hard to troubleshoot when it's not structurally happening. Some observations: - Not tied to the use of a specific application (although I doubt that's even possible with panics). - OS X sometimes heavily lags shortly before it happens. - No hardware changes were made before the panics started happening. - Also happens with no external devices connected. - It seems to be happening increasingly often. - Added: There are also random "freezes" (only mouse moving), not being labeled as kernel panics, but forcing me to do a hard shut down. When the Mac wouldn't start yesterday after a panic, I started to panic myself . It turned out to be a corrupted directory on the system drive, which was luckily solved using the wonderful DiskWarrior software by rebuilding the directory. With kernel panics it's usually a hardware problem (correct me if I'm wrong). Does the corrupted drive directory mean it's a problem with the drive, or could it still be anything else? It's a non-standard drive: Crucial C300 SSD with latest firmware. I also have third-party RAM installed (100% compatible), which hasn't given any trouble after installing it a long time ago. A few reports (also containing system info): 1, 2, 3, 4, 5, 6 What are your recommendations to troubleshoot any further? If more info is needed, ask away! A lot of thanks for all the help!