http://bugs.winehq.org/show_bug.cgi?id=18562
--- Comment #13 from Nikolay Sivov bunglehead@gmail.com 2010-05-30 05:53:20 --- Try to install Gecko with debug info (described here http://wiki.winehq.org/Gecko, Debug Info section). And attach updated log, this one should be replaced:
1 0x03a8d962 in xul (+0xb3d961) (0x0033a03c)
with function names.