I have had a hard time with erratic mouse behaviour in eclipse Galileo (Build M20090917-0800). Most of the time in dialogs moving the mouse over buttons would focus and press them them but due to that left click did not do anything.
I found an easy solution here: run eclipse from a shell-script:
#!/bin/sh export GDK_NATIVE_WINDOWS=1 /home/[your eclipse directory]/eclipse
export GDK_NATIVE_WINDOWS=1 did the trick for me!
Update 2009-11-17 when Eclipse restarts itself the setting gets lots so I close/start eclipse instead of using the restart function
I was looking for a visual diff/merge too for linux today as I don't always use Eclipse. I stumbled upon Meld today and have been using it for some major merges for the last hour. Well I must say it's exactly what I was looking for so I'm happy to share.
Installation is easy on ubuntu:
apt-get install meld
There it how it looks like:
Wolfgang Wagner has written this really good how-to about debugging Nagios plugins. It can be a pain to find out when you add or write a new check. The solution is to let a script (capture.pl) that takes care of redirecting STDOUT and STDERR to a logfile make the call.