Lion version of vim crashing repeatably - caught deadly signal SEGV
There are two avenues when you have located a repeatable crash (and from the comments and discussions it sure looks like the shipping version is more crash than ideal for the latest shipping OS).


File a bug at bugreporter.apple.com - it's free if you sign up for a free developer account.
Use something like homebrew to get a newer (or older) version of vim that isn't crashing.