As seen here
I have the same issue on a multi-author blog. Level 5 and above users can edit the timestamps.
All the authors are at level below 5, and we'd like to keep them there except for editing their time stamps.
We WANT their posts to go up at a particular time, and we want their posts submitted early.
The referenced support topic
didn't work for me. Was this only working for a previous version of WordPress, and not for the current 1.5+?
I'm going to restore the file to their original state, promote the users temporarily and look for a fix with you fine folks.
Any help with this?