Service delay issue

Hello,

I added a simple word lookup to the Terminal services.

The expected behaviour:
When a word is selected and you click on 'Services/Terminal/DICO FR', 
the selected word is given as an URL paramater query to the online 
Chicago French Dictionary. This server returns an html page with the 
word definition.

What happens:
Firefox is started with the expected URL.
But a NSAlert message says:
Failed to contact service provider for 'Terminal/DICO FR': timed out 
waiting for reply 3 (terminalService:userData:error:)
Finally, the expected web page is shown as expected

So I guess there is a delay issue.
How I could improve this service to avoid the NSAlert error panel?
I attached the two related plist.

<org.gap.Terminal.plist>


<TerminalServices.plist>


Regards,
Patrick

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