Redhat has acquired Qumranet the developers of KVM. Will be interesting to see how this plays out in the Linux virtualisation world.

I haven’t tried KVM yet as I’ve been too busy and Xen is more mature – but many of the accounts I’ve read seem to indicate that for Linux its performance is very good maybe better in some cases than Xen. Management is another issue, but that is just a matter of time and development enegry.

From lwn.

Here are a couple useful ESXi hints:

• ESXi 3.5 does ship with the ability to run SSH, but this is disabled by default (and is not supported) – from.
• ESXi and what it does NOT have compared to regular ESX 3.5
• Upgrade ESX eval to ESXi.
• Some Basic ESXi questions.
• 8.04 and ESX.
• Motherboards and unsupported servers that work with ESX 3.5 and / or ESXi 3.5 Installable
• 
  Running ESX 3i Installable from a USB Flash Drive

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Market is changing constantly – this is a big move on VMwares parts but follows on their previous strategy with GSX/Server and VMware player:
VMware ESXi Hypervisor Now Free – VMware

Check out the download link at the end of the press release.