http://bugs.winehq.org/show_bug.cgi?id=13335
--- Comment #122 from Roderick Colenbrander thunderbird2k@gmx.net 2008-12-08 02:41:58 --- The main issue is lack of virtual memory for native libs. It affects all libraries and video drivers. It is just that fglrx is more sensitive to it and falls backs (or used to fall back) to software rendering when this happened. Nvidia so now and then reports GL_OUT_OF_MEMORY which can be an indication of this problem or in the worst case they crash.