Out of interest, is there any reason why you are considering using the older (Ubuntu 8.04) builds?
Is it because of issues/reports of issues with Ubuntu 10.04/TKLv11.x on ESX/ESXi 5 (when acceleration is enabled)?
If so there is a workaround which involves disabling acceleration on the guest and installing the newer (2.6.35 - Maverick backported) kernel that is available in the official Ubuntu updates repo. Details on how to do this can be found in this thread.
Some users have reported problems with Ubuntu10.04/TKLv11.x
But AFAIK Ubuntu8.04/TKLv2009.x should be fine.
Out of interest, is there any reason why you are considering using the older (Ubuntu 8.04) builds?
Is it because of issues/reports of issues with Ubuntu 10.04/TKLv11.x on ESX/ESXi 5 (when acceleration is enabled)?
If so there is a workaround which involves disabling acceleration on the guest and installing the newer (2.6.35 - Maverick backported) kernel that is available in the official Ubuntu updates repo. Details on how to do this can be found in this thread.