Thanks evreybody,
for me the probleme was on my host ??
An old theme not secure…and not due to contact form7 or Really Simple captcha.
Sorry for that,
jstana,
when I submit yor form, my firebug console return me a :
<b>Warning</b>: unlink(D:\inetpub\stana\blog/wp-content/uploads/wpcf7_captcha/1015595072.png) [<a href='function.unlink'>function.unlink</a>]: Permission denied in <b>D:\inetpub\stana\blog\wp-content\plugins\really-simple-captcha\really-simple-captcha.php</b> on line <b>190</b><br />
<br />
<b>Warning</b>: unlink(D:\inetpub\stana\blog/wp-content/uploads/wpcf7_captcha/1015595072.txt) [<a href='function.unlink'>function.unlink</a>]: Permission denied in <b>D:\inetpub\stana\blog\wp-content\plugins\really-simple-captcha\really-simple-captcha.php</b> on line <b>190</b><br />
juste before the output form, maybe it could help…
