Got a New Server! But, I'm randomly losing $_POST data...

Hey,

I just got a shiney new pair of Dell servers (sweet!) and am running into some very strange trouble with $_POST data.

A bit of background:

• Server is running Debian Testing
• Apache 2.0.55-4 and PHP 5.1.4-0.1
• Mysql 5.0.22-3
• I am running a test version of www.projectopus.com on the server
• My other servers include 2 Debian testing boxes, and an Ubuntu Dapper box. None of those are using Mysql 5 .... but that "shouldn't matter"

Please flag me right away if that LAMP version combo seems like a bad move.

NOTE: This problem may seem similar to the thread "Problem with login (doesn't seem to 'take')" however I assure you this matter is differnt. That thread is about problems with: certian browsers, cookies, and session caching. My problem is that on certian forms (on every browser, from any location) the post data doesn't get passed all the way through PHP.

I can confirm this by putting a drupal_set_message('POST: ' . var_export($_POST)) in a menu hook of a loaded module (menu hook gets hit always and at least once). On some forms I can see my post data show up. On the "broken" forms I see one or possibly two lines showing POST: array().

Specifically the problem affects the following forms:

• Quick Login (user/login works correctly though)
• Create Node
• Edit Profile
• Save the admin/settings page
• ... many more ...

Has anyone ever seen anything like this happen before?

PS: Yes, I tried logging a var_export of the $_POST data right inside the index.php to see if it was at least getting into PHP at all. It appears that the POST data is not even reaching PHP.