I had recently installed gentoo with the whole system compiled with gcc-4.4.3 and with the ACCEPT_KEYWORDS="~x86" flag enabled, so the system is with the most recent packages. I'm thinking that there should be some problem with gcc-4.4.3 because when I'm going to run Warcraft 3, I get a Code: err:seh:raise_exception Unhandled exception code c0000005 flags 0 addr (nil) . I have another installation that was compiled with gcc-4.3.4 and has no trouble when running Warcraft 3. I haven't changed my USE flags, and my cflags are: Code: CFLAGS="-O3 -march=amdfam10 -pipe" CXXFLAGS=${CFLAGS} I know that is not recommended compile with -O3 but Portage use -O2 when it is compiling wine. Does anyone has a position about it?