Installing squirrelmail cause apache2 to segfault

[Steven Jones <thing@thing.dyndns.org>]

Hi,

I have a clean install of apache2 on Lenny, and once I have apache and 
dovecot running I attempt to install squirrelmail and the "it works" 
page packs up and I get this in messages and syslog.

Dec 19 16:37:30 warlock kernel: [   62.058108] apache2[2230]: segfault 
at 0 ip b6d6281f sp bf80fd0d error 6 in pdo.so[b6d5d000+14000]

So if I do an apt-get purge apache2.2-common and then re-install apache2 
its OK again...until I install squirrelmail again

:/

any ideas please?

regards

Steven