I have been testing zimbra for a couple of days and everything was going very well. However, today, when I accessed zimbra using the web client from inside firefox 3.0.19 on ubuntu 8.04 lts, the web client gave distorted views.

As I tried to zoom in and out, all of the icons changed locations and merged to overlapping locations so that the web client was unusable.

Is there a way to reset this so that the icons line up properly again and the web client becomes usable?

thank you