Last week I did UPDATE for Zimbra 5.0 and I was impressed. You did a good job!
But I have one problem Regarding performance. My CPU USAGE is 100% .This means that I have restarting the service of ZIMBRA from time to time. Restarting Zimbra sees things calm down for a few minutes but it's soon back at 100%.
I have 300 users and my Hardware is : 2 Xeon HT 3.06 , 4Gb Ram. Before the Update this problem not occurred.
Romulo Giordani Boschetti