[support] I think, problem solved?

[Roger]

  Drupal 7 Content Types - Edit showing WSOD
After a little testing this morning the problem might, might be solved, 
at least temporarily.
Today I was getting the Error 324 (net::ERR_EMPTY_RESPONSE): The server 
closed the connection without sending any data.
Turns out it may not be a browser, php.ini setting nor a Drupal setting 
but  my.cnf setting.

I changed max_allowed_packet=32M  to max_allowed_packet=64M and now I 
can edit all content types, no error messages, all good so far.
I have no idea why but it works.
I need to test this in the other installations for a few days to be more 
sure.

I still get the: Fatal error: Allowed memory size of 67108864 bytes 
exhausted (tried to allocate 2458767 bytes) in 
/var/www/html/myfile/modules/user/user.admin.inc on line 787 now for 
permissions. But this seems to be a bug in php 5.

Cheers
Roger