It works for me with pretty perms on or off, on wp 3.1.3 (localhost) it's just that it gives me this seemingly weird url in both cases:
where terms and values chosen show up twice and obviously the pretty perm format is not applied when on.
The query works perfectly with just the first part by the way
?tax1=xxx&tax2=yyy, the second part seems redundant.
By the way Kate I like this plugin a lot, I'm patiently waiting for custom post types support.
Is there any possibility in the future to have some sort of live filtering (ajax?), where if one chooses a value from taxonomy_1, then the available values for taxonomy_2 get automatically limited/removed to just the ones matching the previous conditions?
And perhaps feature a number on the top of the widget that gets updated (reduced) each step of the way stating that XX number of items found.