XenServer 5.0: List of supported guest operating systems

Finding the supported guest OSes with their available  features when on XenServer is not too straight forward as Citrix just list all the operating systems without anything specific. But if we also look to the Release Notes and the XenServer Virtual Machine Installation Guide we can compare that to the list of supported OSes and see if there are caveats by enabling some of the features.
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The following guest operating systems are supported by XenServer 5.0:
 
X86
x86-64
2x vsmp
4x vsmp
8x smp
Windows Server 2008
Yes
Yes
Yes
Yes
Yes
Windows Server 2003
Yes
Yes
Yes
Yes
Yes
Windows Vista
Yes
No
Yes
Yes
Yes
Windows XP
Yes
No
Yes
Yes
Yes
Windows 2000
Yes
No
Yes
Yes
Yes
Red Hat Enterprise Linux 5
Yes
Yes
Yes
Yes
Yes
Red Hat Enterprise Linux 4
Yes
No
Yes
Yes
Yes
Red Hat Enterprise Linux 3
Yes
No
No
No
No
CentOS 5
Yes
Yes
Yes
Yes
Yes
CentOS 4
Yes
No
Yes
Yes
Yes
Oracle Enterprise Linux 5
Yes
Yes
Yes
Yes
Yes
SUSE Enterprise Linux 10
Yes
Yes
Yes
Yes
Yes
SUSE Enterprise Linux 9
Yes
No
No
No
No
Debian 4.0
Yes
No
Yes
Yes
Yes
Debian 3.1
Yes
No
Yes
Yes
Yes