I have new installation of WAMP yesterday,
I'm using php_xdebug-2.0.4-5.2.8.dll with my WAMP, Apache 2.2, and PHP 5.2.9-1 in Windows Vista

When I add these to my php.ini:
[XDebug]
;; Only Zend OR (!) XDebug
zend_extension_ts="C:\wamp\bin\php_xdebug-2.0.4-5.2.8.dll"
xdebug.remote_enable=true
xdebug.remote_host=localhost
xdebug.remote_port=9000
xdebug.remote_handler=dbgp
xdebug.profiler_enable=1
xdebug.profiler_output_dir="C:\wamp\tmp"
xdebug.remote_log = "C:\wamp\tmp\log.log"

My apache randomly crash, this is my report:
[Sat Mar 28 10:07:20 2009] [notice] Parent: child process exited with status 255 -- Restarting.
[Sat Mar 28 10:07:21 2009] [notice] Apache/2.2.11 (Win32) PHP/5.2.9-1 configured -- resuming normal operations
[Sat Mar 28 10:07:21 2009] [notice] Server built: Dec 10 2008 00:10:06
[Sat Mar 28 10:07:21 2009] [notice] Parent: Created child process 7008
[Sat Mar 28 10:07:22 2009] [notice] Child 7008: Child process is running
[Sat Mar 28 10:07:22 2009] [notice] Child 7008: Acquired the start mutex.
[Sat Mar 28 10:07:22 2009] [notice] Child 7008: Starting 64 worker threads.
[Sat Mar 28 10:07:22 2009] [notice] Child 7008: Starting thread to listen on port 80.

But when i disable the code in php.ini restart the apache everything is ok right now. Not sure what is the problem. I am using Esclipse IDE.