I encountered a kernel panic today while running VirtualBox 4.3 on my new Haswell 15" with discrete GPU. From the error trace, it looks like the panic may have been caused by something related to graphics switching. I bought my previous MBP, a 15" high-res, in March of 2011 and have never had a single kernel panic on that machine. I've seen from this site that kernel panics aren't exactly a rarity, but can sometimes be a sign of a bigger problem. Since I'm still within my 14-day return window, I'm wondering whether I should return the laptop. Any suggestions/anecdotes/thoughts are appreciated. Thanks!