[support] login doesn't work

[Erik Steffl]

   I can login but if I click anything afterwards it shows me as not 
logged in (i.e. I don't have permissions and the login form is back on 
page). It used to work before, not sure what changed (php was updated on 
my machine)

   Any ideas how to troubleshoot? I don't see any error message in 
apache logs, is there some place where I can see drupal errors? Looked 
at db but no obvious tables with errors/logs.

   TIA,

	erik