I have a apache server on a winxp box, ocassionaly I got a

"httpd error, memory could not be written" error, here is what I found in the apache error-log

`[Sat Sep 12 10:58:34 2009] [error] [client 113.68.84.79] Invalid URI in request ;\xece\r\xd5m\xed{\xbcf\xbf\xffq\bZNB\xf0a\xf9\x13\xf3[\x06Y\x02G\xca\xc5\xf3\x9ft\x89b\xed\xb5m\x9f\x1c\xa6\x03\x10\xee\xe9G\xb5\xe0glLf\xd4eFT\x8f.{Ysl\x89\x05\x18\x0f\x0fp\xdd\xaf\x11G\xbe\xbf\x96/Pr\x9e\xf4\x89\xf2\xd4^mA\x13y2\xe3\x95\xaeD\x02\xa7*G\xe4\x1d\x07r^\xaf_J\xf7\xbc\x90\x17\xda\x90\x17\xec\xd4>\xe8\xe4\xfcU\x04\xbc2V\xe1\x170\xeb

Error in my_thread_global_end(): 66 threads didn't exit

[Sat Sep 12 11:08:43 2009] [notice] Parent: child process exited with status 3221225477 -- Restarting.

[Sat Sep 12 11:08:51 2009] [notice] Apache/2.2.4 (Win32) PHP/5.2.3 configured -- resuming normal operations`

Anybody can tell what this means and where the problem is ?

Thanks.