xdebug+pdt on localhost; xdebug is not working as "php web page", but works as "php script"; why?

Question

Hello,

I've set php executables to /opt/lampp/bin/php; when I'm starting to debug index.php as "php script" - everything is ok. But when I'm trying to debug as "php web page" nothing happens...

Here is my xDebug configuration

xdebug.remote_enable=1
xdebug.remote_autostart=0
xdebug.remote_host="localhost"
xdebug.remote_port=9000
xdebug.remote_handler="dbgp"

But the strange thing... When I'm setting up xdebug.remote_autostart=1 and running script in browser - everything is ok - I see debug window in my PHP Debug perspective. But I can't start debugging as "php web page" from Eclipse PDT.

Any ideas?

Thank you

UPD: When I'm running localhost/?XDEBUG_SESSION_START with xdebug.remote_autostart=0 - everything is also ok.