http://bugs.winehq.org/show_bug.cgi?id=10314
--- Comment #2 from Dan Kegel dank@kegel.com 2007-11-04 19:24:56 --- I think this was the last line in the window when the lock happened:
000c:CallTo16(func=1237:3075,ds=147f,0024,0046,0000,151f,172a) ss:sp=147f:a658 ax=147e bx=0000 cx=0000 dx=0000 si=0000 di=0000 bp=a682 es=147f fs=0033
And when it hung, the mouse was an hourglass and you could still move the mouse around, but not do anything with it.