Thank you for this bug report. To properly diagnose the problem, we
need a short but complete example script to be able to reproduce
this bug ourselves. 

A proper reproducing script starts with <?php and ends with ?>,
is max. 10-20 lines long and does not require any external 
resources such as databases, etc. If the script requires a 
database to demonstrate the issue, please make sure it creates 
all necessary tables, stored procedures etc.

Please avoid embedding huge scripts into the report.

I am not quite sure what code is causing this. But we had at least 25 websites that were having this problem on 2 different servers. So it seems like some major bug to me... I rolled back both servers to 4.4.4, because we need to keep our service up offcourse. Will be testing on a development later.

I compiled php by hand with the following options:

./configure --prefix=/usr/local/php-4.4.5 --sysconfdir=/etc/php4/apache --localstatedir=/var --mandir=/usr/share/man --infodir=/usr/share/info --with-config-file-path=/etc/php4/apache --enable-inline-optimization --with-bz2 --with-png-dir=/usr --with-gd --enable-gd-native-ttf --with-freetype-dir=/usr --with-jpeg-dir=/usr --with-openssl --with-png --with-regex=system --with-ftp --with-zlib --enable-bcmath --enable-magic-quotes --enable-sockets --with-mysql=/usr --with-xml --enable-calendar --enable-dbx --enable-dbase --with-apxs=/usr/bin/apxs --enable-exif --enable-ftp --with-dom --with-pspell --with-t1lib --with-gettext --enable-mbstring --with-ldap --with-imap=/usr/local/imap-2004g --with-mcrypt

Thank you for this bug report. To properly diagnose the problem, we
need a backtrace to see what is happening behind the scenes. To
find out how to generate a backtrace, please read
http://bugs.php.net/bugs-generating-backtrace.php for *NIX and
http://bugs.php.net/bugs-generating-backtrace-win32.php for Win32

Once you have generated a backtrace, please submit it to this bug
report and change the status back to "Open". Thank you for helping
us make PHP better.

Please also try using this CVS snapshot, I believe it should fix the problem:
http://snaps.php.net/php4-STABLE-latest.tar.gz

(The next snapshot should be available in a couple of hours).

I haven't made a backtrace yet, but I did just compile the 13:30GMT snapshot, that seems to have fixed the problem. Maybe time for the 4.4.6 release ;)

That's up to release manager to decide.