Trace.Warn doesn t write to my trace file: trace.axd in Sharepoint

I put Trace=true in Web.config and CallStack="true"

Is there any reason for that. I m coding a dll that Iput in the GAC using VS 2005. and my command is:

HttpContext.Current.Trace.Warn("blablabla");

I m programming in Sharepoint

Thanks

Thanks a lot for your help.

[352 byte] By [rtaiss] at [2008-1-1]