I recently upgraded a computer from Slackware64 14.1 to 14.2, which bumped by fvwm version from 2.6.5 to 2.6.6.
With the new system, when I ask Adobe reader 9.5.5 to go full-screen, I get a window with no decorations, but it only occupies about 3/4 of the screen, off to the lower right. I removed fvwm 2.6.6 and installed 2.6.5 from Slackware64 14.1 and now it does the former (and expected) full-screen behaviour. Has anyone else seen this? FWIW, this is on a Fujitsu T900 which has a 13.3" 1280x800 screen and 8GB RAM. Thanks.