I am on 64 bit Ubuntu 14.04. After starting slic3r and selecting Check for updates... slic3r immediately crashes, with the following on the terminal:
slic3r: Fatal IO error 11 (Resource temporarily unavailable) on X server :1.
BTW, same thing happens with 1.1.7 - I'd just never tried that menu entry before, so wanted to see what it does. Now I know, it just crashes slic3r :-)
Oh, I can reproduce that...
Bugfix: crash on version check on Linux. #2641
Fixed! Thank you for reporting.