Debian Testing, LDAP Directory, Kernel general protection errors

I am using the current Debian Testing as a distribution tree and have recently updated the system. Since that last update I continue regularly receiving the following errors:

Jan 31 10:18:19 lila kernel: [ 44.844774] exim4[3153] general protection eip:b785f4ec esp:bfba2ff8 error:0
Jan 31 10:18:42 lila kernel: [ 67.911708] apache2[3583] general protection eip:b7bf44ec esp:bfe746b8 error:0

Something seems to make apache2 and exim4 to sigfault after that particular update and I do suspect that it has something to do with libldap2 libnss-ldap and libpam-ldap and in general with daemons or programs which need to fetch user data from my ldap directory which otherways seems to work correctly.

I found that related topic (
http://forums.suselinuxsupport.de/index.php?showtopic=47584&pid=205292&st=0&#entry205292) posted a long time ago and tried rebuilding my ldap database but it didn't help.

Something interesting is that even the Segmentation Fault notice daemons startup and keep working and there doesn't seem to be any problem with the apache2 but as it comes to exim4 those segfault errors seems to bring some confusion while delivering mail to remote smtp servers (threads exit with error code and even after successful delivery the messages remain frozen within the exim4 spool).

So if you guys have any ideas or suggestions your help is appreciated.

~Cheers~

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