Custom shortcut executes service twice

Question

Following this answer I have created a custom service that executes a shell script that looks like this:

open -a FireFox "http://dict.cc/$1"

It works fine when I click. Then I defined a custom shortcut for it, (⇧ ⌘ L), and when I use that, the script seems to get executed twice (two tabs open, both showing the desired page). How can I fix that?

Edit: This only seems to happen when I invoce the service using the shortcut from within FireFox.

Edit 2: This gets weirder and weirder. I now created a second script for looking up stuff in Google, and bound it to the hotkey ⇧ ⌘ T. Now when I press that, it actually opens both my custom services. I have no idea why this happens.

Also, I removed both the hotkeys temporarily to check if they were used, but nothing happened when I pressed them.

Answer 1

Strange… maybe trying to rebuild your services menu (and then restarting) will help? See the top answer here:

http://superuser.com/questions/43700/snow-leopard-services-menu-says-its-building

Answer 2

Rather than a direct answer to your question, why don't you try something like Alfred which allows you to setup custom web queries which are a keyboard shortcut away.