In AWN is it possible to only show applications that are on the current workspace?
I know its possible in Docky, but can't find any config for AWN.
I am not using Avant now (in 11.04), so, cannot check for sure, but in 10.10 I used it instead of the gnome panel: unless something has recently changed, there is an option in Preferences (right click > Dock preferences) under General that says something like "Show windows from all viewports". If you uncheck it, it will show windows from one workspace only.
In the newer version of AWN (v0.4.1) on Ubuntu 12.04, you can change this setting by going to Preferences->Task Manager and unchecking "Show all windows".