I don't remember that Khatami has ever been under such a lot of pressure from everywhere. Aside from some intellectualls such as Abdolkarim Soroush and Mohsen Kadivar, whose recent open letters have been circulating among people in Iran, his own brother has wrote a letter to him, warning him of parallel security organizations' methods of action against not only opposition, but even reformist activists and journalists. Maybe that's why he has recently spoken about resignation again. He said that if people wanted him to go, he would step down.
The latest rumors is that hardliners are trying to arrest all influential reformist activists and based on their confessions under torture, accuse members of parliments of co-operating with Americans and cancel the whole parliment.