I ran across a odd bug the other day. Essentially, when M-q is run with an
open bracket in python mode, emacs will freeze.
To replicate the error:

$ emacs test.py

type:
def test(

then hit M-q

The version of emacs I'm using is:

GNU Emacs 24.3.1 (x86_64-pc-linux-gnu, GTK+ Version 3.10.7)
 of 2014-03-07 on lamiak, modified by Debian

Its not a huge deal, it just struck me as odd since it generally really
difficult to get emacs to crash.

Thanks,

Gaetan