GUI linux: Abnormal menu positioning on multi-screen setup

[GoogleCodeExporter]

What steps will reproduce the problem?

1. Arrange your display setup as a virtual desktop with two physical screens 
stacked vertically.
2. Click on of the menu bar items (eg. File) to open it.

What is the expected output? What do you see instead?

The normal behavior would be for the menu to open downward. Instead, the menu 
opens upward in all positions of the editor window (on both screens) and only 
shows normal behavior when the window is positioned close to the top of the 
desktop (menu doesn't fit upwards).
Moreover, when the editor window is positioned on the bottom screen, the menu 
appears along the bottom edge of the top screen.

What version of the Arduino software are you using? On what operating
system?  Which Arduino board are you using?

Arduino version is 1.0. This bug seems to exist for at least as far back as 
0018 (first binaries for linux 64bit I could find). System is Linux Mint 9 
(Ubuntu 10.04) running GNOME/Compiz on ATI fglrx drivers.

Please provide any additional information below.

Processing 1.5.1 does not show this bug. However, Processing 1.2.1 (next 
downloadable binary) does show the bug.
Haven't been able to find a similar issue for Processing to show they were 
aware of it.

The simplest fix seems to incorporate latest Processing changes, wanted however 
to make you aware of the behavior.

Original issue reported on code.google.com by airsc...@gmail.com on 9 Dec 2011 at 5:24

[GoogleCodeExporter]

Issue only exists under java-6-openjdk (Ubuntu's default) and not under 
java-6-sun environment.
Processing doesn't/didn't really support OpenSDK (1.2.1 throws a visible 
warning about this) so this makes sense.

Original comment by airsc...@gmail.com on 9 Dec 2011 at 6:19