Hi, I have the same problem with apache and php version 4.
The problem only started after the upgrade from Sarge to Etch. With Sarge, Apache 2.0 and PHP4 4.3.X it worked flawlessly and only with the current packages this problem arises and my code didn't change that much during this time as it evolves incrementaly. Additionally there are only original debian-packages in use on my servers. Greetings Heiko Stübner