problem still exists in Workspace Switcher-Applet 2.17.91 (Ubuntu Feisty last updated on 2007-02-23)
I can change the number of workspaces only either - by typing (entering a number via keyboard) or - pressing & holding down the left mouse button on the up/down keys -- Gnome Workspace Switche Preferences: Number of workspaces number-field arrow buttons don't work https://launchpad.net/bugs/83334 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
