I've had issues with freezes for a while pre 10.9.3 too. These obviously don't generate panic files so are more of a pain to try to debug.
Also I recently installed refind (http://www.rodsbooks.com/refind/) to dual-boot linux and have experienced a lot of issues as a result of that (separate to the aforementioned freezing issues.)
Also I recently installed refind (http://www.rodsbooks.com/refind/) to dual-boot linux and have experienced a lot of issues as a result of that (separate to the aforementioned freezing issues.)
At least this guy has actual kernel panics :)