This article is from the FAQ, by with numerous contributions by others.
While WSIRC does have some stability problems, some releases also have
a bug which allows other IRC users to easily cause WSIRC to crash
(GPF, General Protection Fault). In Version 1.4e and before, a simple
null CTCP command is all it takes.
However, Versions 1.4f and later, including the recently released
Version 2.0 have apparently fixed this problem.
If you're receiving frequent GPF errors with WSIRC, you may wish to
update or switch to another IRC client.