I think that air cooled PCs are fine, but inefficient. In a rack situation if you could use industry standard push-to-connect fittings and control the liquid in such a way as not to get everything all messy, think you could setup a quiet and cool rack-mount unit. If the servers were all hooked to a central liquid cooling unit with a common collection and delivery system it would be easier to use that sterling technology. You would have a Hot collection side and a Cool delivery side. With the servers in between at one end and the cooling/refrigeration source at the other end. I think with a bit of engineering a liquid cooling standard could be developed and used in many server rooms/data centers/server closets. »

We use Evolution in our office environment and have been for four years, since RH EL 4. We do not use Exchange, and I would not recommend our organization getting it. I would say that it has performed as well as Outlook. That being said I would not say that either is a great product. We have had problems with buggy, or non-working features. Little things like email notification and passwords for POP3 accounts either just don't work or only work in undocumented ways. We have had problems with the mail storage files getting corrupted, who knows how. Also, it is very tricky to turn off some "features" that get in the way, like password keyrings. We are in the process of moving to Ubuntu 8.04 in that office environment, and while they have fixed some bugs in the latest version on Ubuntu compared to our older RH EL setup, there is a long way to go until I think Evolution will be a mature product. I would deem is usable, but not desirable. With that said, until Mozilla releases Thunderbird with Sunbird, there won't be a decent alternative to email/calendar functions. »