Heya, thanks for your suggestion, I’ll post my findings:
– Disable Plugins: I had an autocompleter plugin. When I disable that, it took me to another white screen. (So I now know it’s likely not to be an post.php issue, but something else).
– Upgrade: I’ve got the latest version (downloaded last thursday).
– Remove unwanted code from .htaccess:
The only thing I got there is:
AddHandler x-httpd-php5 .php
# BEGIN WordPress
# END WordPress
– Change theme: I don’t understand this point :p
Thanks in advance