Problem: Template keeps sending

Hello,
I have managed to create a template for autoreply, and have also created a Filter in order to use it when receive certain mails, but somewhere it goes wrong because every time that I do a Send/Receive, the same incoming mails will be sent a new autoreply again and again???

Any Idea what is the good Filter setup for this problem?
Thanks very much!
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Apply Filter when = Checking Mail
Match all of the Following
Subject contains = "My text "
then perform
Reply with Template = "My Template "
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Almost ok

Well, I'll answer myself, as I have resolved part of the problem.
It was caused by the fact that I tested with autoreply to an account of myself that was also with an auto-forward.

Now the only small item left is:

In the subject header of the autoreply with the template, The subject of the original received mail is quoted like "(was: original subject)"
How can I change that, or at least eliminate the "was:" part of it??


Thanks again