We are evaluating the ZCS 4.5.11 open source edition and observed that in IE7 zimbra web client consumes too much memory and user is facing delays in geeting the responses on each user action.

I also observed that on every click of new tab like options memory usage is getting increased when seen i Task manager.

Has anyone seen or faced such a problem?

Do anyone has idea about its resolution in any higher versions of zimbra like 5.0 or any higher version?

Any help or pointer in this topic will be highly appreciated.

Thanking you in antcipation.