Cool, just read a post by Chris Miller on the fact that IBM SameTime 7.5 connect client requires Microsoft Internet Explorer.
It is well documented but you need to be aware of this fact, mainly with Linux machines.
The Sametime Connect 7.5 client does not support configurations where the only browser installed on the machine is Firefox. This may be, for example, a Windows machine where Internet Explorer has been uninstalled, or a Linux machine where only Firefox is installed.
Otherwise certain features do not work, like chat
Well chat is not that significant, is it ? 😉