Updating WSR problems

[f.difonzo]

I have deployed my simple class under jboss-net by wsr file and it work fine. I want change my class method behavior and I know I can't simply replace wsr file with new one, but although I try to restart JBOSS (3.2.3 version) I don't see any change.
With my surprise, also if I have simply removed wsr and restarted JBOSS, I continue to access to my class.
I have started JBOSS with:

run.sh -c all

And I have stopped it simply typing Ctrl-C.
What are my mistakes and how I can update my wsr file?

Tank's in advance.

[schrouf]

Try deletion of all/temp directory before restart

Regards
Ulf

[f.difonzo]

I have controlled this directory, but it is empty!!!

Thank's