Created attachment 2862 Set border on "ebox" instead of "frame". The cpugraph plugin has no border. Other plugins such as "network monitor" or "disk performance monitor" do have one. I'll attach a screenshot later on. I think that the cpugraph plugin is supposed to have a border, too. In fact, it indeed had one in the past: An old build from 2007-12-04 works corretly. However, if you compile it nowadays the border is missing. I attached a patch which should fix this problem. But to be honest, I don't know why it worked in the past -- the variable "frame" isn't initialized at this point. Build Date & Platform: 2010-02-26, xfce4-cpugraph-plugin-0.4.0, current Arch Linux i686 Let me know if you need any further information.
Created attachment 2863 A screenshot comparing both builds.
This problem is now solved. Whether or not cpu-graph should use a border is now an option, so if you want uniformity with other plugins, you can have that, and if you want it to use all available space, you can have that too.
Yes, current git head (e8b3867) works very well. Thank you! :)