[imp] Being auto-logged out of IMP

[Sanjeev "Ghane" Gupta]

Hi,

I am using IMP 2.2.6 on a Debian box.  The system has been running well,
with Apache/MySQL, for over 6 months.

Yesterday a new IP address was added to the machine, and the system
rebooted.  From this time (as far as I can tell), users logging in to IMP
have been able to see their Inbox, but clicking on anything (next page,
compose, etc) logs them out and sends them back.  This is happening for all
users.

I got IMP off teh .deb package, and it is basically a plain vanilla install.
I am accepting cookies indiscriminately.

Hints?

--
Sanjeev