I use vim 7.4 and it segfaults atleast four-five times everyday. I suspect it's some plugin that is causing it to crash but I don't really know. Does it happen to anyone else too? I have mapped Ctrl-C to ESC and I use it often. One specific instance I have seen vim crash is when the cursor is at np.inf and I press Ctrl-C.
It's also worth spring-cleaning your config/plugin setups.