[imp] Imp hangs after upgrade

[Chris]

Hi,

I just updated to the new horde suite today (using pear upgrade -a -B -c 
horde).  Everything so far seems to work except for IMP and Kronolith.

when I Click on "Mail", the left panel says "Loading..." and hangs. 
Kronolith does the same thing, incidentally, so I imagine the issue is 
the same for both.

I am using imp 6.0.4, horde 5.0.4 (and kronolith 4.0.4).  My entire 
horde suite is current as of today.

I am running on debian squeeze, and all packages are up to date as of 
today.

There is no output in my horde.log, and I see nothing of consequence in 
/var/log/messages or /var/log/syslog.

Any idea on what is going on here?

Thank you.

-Chris