We currently use Exchange/Outlook.
I'm looking at alternatives and I currently playing with Zimbra (Would be network edition when Ubuntu supported).
With our current setup we have a 'public contacts' with around 1600 entries. Now the way I have set this up with Zimbra was to import the contacts into my account and then share it.
If I log into my account using the web client navigating through the contact is fine I click on a letter and those contacts beginning with that letter appear almost instantly.
However if I log into a test account that I have shared the contacts with and do the same, there is around a seven second delay before the results appear.
My question is is this normal? Can anything be done to speed it up?