My 11" MacBook Air usually works great, but when connected to my 27" Apple LED Cinema Display, it sometimes kernel panics. I've started saving the crash logs, and it has happened four times so far in March, and it's only March 13th now, so that's an average of once every three days. The panics usually happen when doing somewhat visually intensive work, e.g. playing QuickTime, scrolling Google Maps, etc. None of it is super intensive (gaming, etc). They tend to take this form: panic(cpu 1 caller 0x2348a3): "zalloc: zone \"kernel map entries\" empty."@/SourceCache/xnu/xnu-1504.9.26/osfmk/kern/zalloc.c:948 But the stack traces are different: some mention GeForce, others USB Audio. This is a 2GB/128GB 1.4GHz 11" Air. Is this level of kernel panics normal? Am I likely to get any improvement if I get a replacement from the Genius Bar?