Not to belabor this point, but here is a link to a great 1U Sun Fire V60x dual Xeon server:
http://www.sun.com/servers/entry/v60x/
Note that in the description, quoted below, Sun specifies all "standard linux distributions" ...
Quote:
Specifications
Processor : Single or dual 2.8-GHz/3.06-GHz/3.2-GHz Intel Xeon processor (533-MHz FSB)
Main Memory : Up to 6 GB of registered DDR-266 ECC SDRAM
Network : Dual 10/100/1000-Mbps Base-T Ethernet ports
Video : Integrated ATI Rage XL video controller
Internal disk : Up to three 3.5-in. x 1.0-in. 36-GB or 73-GB 10K RPM drives available
Operating System :
Standard Linux distributions or
Solaris 9 8/03 Operating System, x86 Platform Edition or
Red Hat Enterprise Linux or
SuSE Enterprise Linux Server or
Microsoft Windows 2000 (WHQL-certified) (customer-provided) or
Microsoft Windows Server 2003 (WHQL-certified) (customer-provided)
PS: I am considering upgrading this site to a Sun Fire V60x, if I can snag one on the net at a bargain