[xmonad] OO.o won't open, Dialogs and GIMP won't float/tile right

[Dayo Adewunmi]

Hi guys.

I love Xmonad. Installed it on my Ubuntu 8.10 laptop a couple of days 
ago for the first time, so I'm still a newbie. I managed to add Xmobar, 
by following the installation instructions from here: 
http://code.haskell.org/~arossato/xmobar/#installation and using the 
config example from here: 
http://haskell.org/haskellwiki/Xmonad/Config_archive/John_Goerzen's_Configuration#Configuring_xmonad_to_use_xmobar

My modifier is Alt, so I press Alt+p to start apps from the grey menu 
bar that appears at the top of the screen, and so far the only one that 
won't start is OpenOffice3.

Also, I have to start GIMP 2.6 in a dedicated workspace, because it just 
won't tile correctly with other open apps.
Dialog prompts like "SaveAs" and "Open" of various apps don't float 
right either, leaving the "Save", "Open", "Cancel" buttons hanging out 
of sight below the visible line of the screen.

Also pressing Alt+Enter is said to switch the active frame with the 
frame in the Master pane, but this stopped working after some editing of 
xmonad.hs (or .xmobarrc?). Unfortunately, I can't remember what changes 
I made that caused Alt+Enter to stop working.

Here are my specs and configs:

~/.xmonad/xmonad.hs: http://pastebin.com/f5e107f70
~/.xmobarrc: http://pastebin.com/febe32b4

Ubuntu 8.10 Intrepid Ibex
Linux 2.6.27-11-generic #1 SMP Wed Apr 1 20:57:48 UTC 2009 i686 GNU/Linux

Regards

Dayo