Waouw thx guys for your answers ; great job ^^ !
OK:
-This guy in Australia, I don’t know him, total unknow !
-Secunia told me : Detection Statistics:
11 Applications Detected in Total
0 Insecure Versions Detected
11 Secure Versions Detected

Running For:
0 Minutes, 17 Seconds

Errors Detected:
0 Errors Detected

-I always used Ad-adware, but this monring a have downloaded a freee trial version from Avg anti spy…
Conclusion ? Ad aware sucks Oh My God !!!
Avg found 150 tracking cookies and on thing located on my second hard disk, a data called downlad.small.bgv, Avg gave him “high rank priority dangerous”…

Well I Destroye everthing, and I will try my ping…hope it will be ok now…

Oh yes when I said hijackthis “found” nothing, I mean I posted the Log on the hijackthis website, and it told me everthing is “green”