http://bugs.winehq.org/show_bug.cgi?id=30568
--- Comment #10 from Dmitry Timoshkov dmitry@baikal.ru 2012-05-03 11:58:19 CDT --- Created attachment 40015 --> http://bugs.winehq.org/attachment.cgi?id=40015 Force NumLock state on for '.' on keypad
Does the attached patch help?