Over the last several weeks, since around the time I upgraded to Mavericks, I've been experiencing frequent kernel panics. More worryingly, yesterday my laptop refused to boot (not even turning on the display or spinning up the hard drive)and instead produced a series of three beeps (which I think is the beep code for "insufficient RAM"?). After resetting the PRAM, it booted normally and seemed to be functioning perfectly until it kernel panicked again this morning. Both AHT and MemTest86+ reported no hardware problems, which surprised me. I'd really appreciate any help in figuring out what's going on, because it makes me uncomfortable to just cross my fingers, back up my data regularly, and hope that the issue magically resolves itself. I have a mid-2012 13-inch baseline MBP (2.5 Ghz processor, 2 x 4GB RAM, etc), running OS X 10.9.3. I'm not sure what other system information would be helpful. Here's the log for the most recent kernel panic: I'd really appreciate any ideas! At this point, I'm just not sure what I should be investigating.