PHP eats memory until killed

Hello, I have a problem with PHP that persists since shortly after version PHP4b3. Any PHP 3 versions and any PHP 4 version until including PHP4b3 are _not_ affected of this, which makes me suspect that it's an internal PHP problem: There's a package called phpChat, available at http://www.phpwizard.net/phpChat When this chatserver is being used with any recent PHP 4 version after beta 3, PHP, after login, will launch an Apache process which starts eating memory until it is being killed. User aborts do not seem to have any effect, it seems that either PHP or Zend step into an endless loop continuously allocating memory. I have not been able to track down this bug myself in the sources - does anyone have any opinions about this? Till