Has anyone else seen this? When replying to an email, the mouse pointer constantly flickers from its normal state, to the 'busy' hourglass state. On and off, about 30 or 40 times per second. As well, the browser 'stop loading button' flickers continuously.
Cpu usage was about 50-60% on _two_ of my CPU cores, on my quad core 6600.
After composing the email, this behaviour continued in Firefox until a restart. (Debianized version 22.214.171.124). This was not seen on 5.0.1 or any other release of Zimbra.
I have not been able to reproduce this as of yet. :/