I experienced the same problem as soon as I upgraded to 13.04. I followed the instructions on http://geekphreek.com/2013/03/skype-segmentation-fault-core-dumped/ and preloaded libGL.so in this way to start Skype:
LD_PRELOAD=/usr/lib/i386-linux-gnu/mesa/libGL.so.1 skype
And after that Skype stopped crashing.
I experienced the same problem as soon as I upgraded to 13.04. I followed the instructions on http:// geekphreek. com/2013/ 03/skype- segmentation- fault-core- dumped/ and preloaded libGL.so in this way to start Skype:
LD_PRELOAD= /usr/lib/ i386-linux- gnu/mesa/ libGL.so. 1 skype
And after that Skype stopped crashing.