I'm debugging a weird issue with a Drupal 5.1 install. The bug presents like this: 1. Log in as an admin user. 2. Go to admin/build/block 3. Select a disabled block for adding it to some region (say, right side bar) and hit "submit". 4. The user will be immediately logged out, and will now see the admin/build/block page as forbidden. This problem is very specific to the server it's running on; I can take the same files and database, download them to a test host, and I will *not* see this problem. I've added a bunch of error_log() statements to the install on the host with the weird behavior, and you see something like this in the log: {{I log in here....}} [19-Feb-2007 01:49:36] Cookie is d5b8a937d722318d971b1930406d744a [19-Feb-2007 01:49:36] Calling session read for key d5b8a937d722318d971b1930406d744a [19-Feb-2007 01:49:36] calling prepare for id user_login [19-Feb-2007 01:49:36] returned from prepare for user_login [19-Feb-2007 01:49:36] entering validate for user_login [19-Feb-2007 01:49:36] returning from validate for user_login [19-Feb-2007 01:49:36] entering submit for user_login [19-Feb-2007 01:49:36] leaving submit for user_login [19-Feb-2007 01:49:36] Calling session write for key 71db2c27b1ff52aae4a0ac7ce8ba183a and val tAJ44N_LlrbmNDZHcLue2FXede9BKRdCIQyBobLPanifZv7HurbKNgbJDHW23sYm {{I go to en/admin/build/block}} [19-Feb-2007 01:49:36] Cookie is 71db2c27b1ff52aae4a0ac7ce8ba183a [19-Feb-2007 01:49:36] Calling session read for key 71db2c27b1ff52aae4a0ac7ce8ba183a [19-Feb-2007 01:49:37] calling prepare for id search_theme_form [19-Feb-2007 01:49:37] returned from prepare for search_theme_form [19-Feb-2007 01:49:37] Calling session write for key 71db2c27b1ff52aae4a0ac7ce8ba183a and val tAJ44N_LlrbmNDZHcLue2FXede9BKRdCIQyBobLPanifZv7HurbKNgbJDHW23sYm [19-Feb-2007 01:50:26] Cookie is 71db2c27b1ff52aae4a0ac7ce8ba183a [19-Feb-2007 01:50:26] Calling session read for key 71db2c27b1ff52aae4a0ac7ce8ba183a [19-Feb-2007 01:50:26] admin display [19-Feb-2007 01:50:26] admin form exit [19-Feb-2007 01:50:26] calling prepare for id block_admin_display [19-Feb-2007 01:50:27] returned from prepare for block_admin_display [19-Feb-2007 01:50:27] calling prepare for id search_theme_form [19-Feb-2007 01:50:27] returned from prepare for search_theme_form [19-Feb-2007 01:50:28] Calling session write for key 71db2c27b1ff52aae4a0ac7ce8ba183a and val tAJ44N_LlrbmNDZHcLue2FXede9BKRdCIQyBobLPanifZv7HurbKNgbJDHW23sYm {{I try to select some block to add to the right side, and hit submit}} [19-Feb-2007 01:51:14] Cookie is [19-Feb-2007 01:51:14] Calling session read for key babc55f2b27b3c224414d840650a8abe [19-Feb-2007 01:51:14] calling prepare for id search_theme_form [19-Feb-2007 01:51:14] returned from prepare for search_theme_form [19-Feb-2007 01:51:14] Calling session write for key babc55f2b27b3c224414d840650a8abe and val tAJ44N_LlrbmNDZHcLue2FXede9BKRdCIQyBobLPanifZv7HurbKNgbJDHW23sYm Any ideas as to what might be "zeroing out" the session cookie? Thanks, Rob Rob Thorne Torenware Networks