http://bugs.winehq.org/show_bug.cgi?id=10020
--- Comment #7 from Greg Rogers greg.r.rogers@gmail.com 2007-10-19 20:24:17 --- I have this problem too. When GW starts up it modifies the permissions on Gw.exe and Gw.dat which makes updating impossible. If you copy an up to date version of Gw.exe it still requires that you "chmod +rw Gw.dat" every time you run GW.