Just had my server upgraded tot PHP 5.1.6 and MySQL 5.0.58
And now when I try to Edit a post or Publish a post, a blank screen is presented.
There are no particular modules or plugins installed.
Checked the permissions on Cache and subdirs, all 777
Template system works normal, that is, editing a template can be done.
I am running ExpressionEngine 1.6.3 build 20080421
Also, an old installation of ExpressionEngine 1.5.2 build 20070404, has the same issues.
Any thougts on this one? Is it insufficient System Memory?