The future of Open Source Groupware

So Xandros acquires open-source e-mail vendor Scalix, does this mean we can write off Scalix as a potential solution to the future. We looked at Scalix but decided not to go for it afterall. I fear for their future .. as I don't think Xandros has a big future left .

On the other hand.. I`m still waiting for OpenXchange to be bought by some Linux distro.
Given their move away from Suse to Ubuntu.. I doub't if the 9 months old rumours they would be going to RedHat will come true.. probably not.

So where does that leave us in the Calendring area.. ?