[horde] Horde Menu (side bar) is not proper after upgrade

[Anant S Athavale]

Dear Members,

Horde Menu (side bar) is not proper after upgrade to Horde 3.0.4. 
I have also upgrade IMP to 4.0.3. I have observed this problem in
Mozilla and Firefox browsers.   The problem is not there when using
with IE.

I am attaching an jpeg image, which shows the corrupted view of
Horde Menu side bar after upgrade.

Has anybody observed the same problem?
Regards,

Anant.