QT menus don't work

[OvErboRed]

Hi, I'm using Cygwin/XFree86 under Win XP, and I am having problems using QT
apps over a network. Basically, whenever I click on menus (or use the ALT
hotkeys), the menus pop up for a split second before going away (though they
work fine when I work locally). I'm using the latest Cygwin and related
packages. I found this to be a problem in both QT apps I've tried (designer
and qvfb). All other X apps run fine. Any help would be appreciated. Thanks
in advance.