Running a FreeBSD 6.x guest on an ESX server may cause the following lines on the console:

This renders the system pretty unusable. The shape of the lnc driver is not that good (hence it has been deprecated from FreeBSD 7 and replaced by the le driver). Fortunately, VMWare ESX offers another network interface which works better in combination with FreeBSD. To switch network interface, follow these steps:

1. Open the VMWare Infrastructure Client.
2. Shut down the FreeBSD guest.

Installing VMWare ESX 3i (3.5.0) on a Hewlet Packard Proliant DL160 G5 could cause problems. It could hang at some stage where it says Enabling interrupts. This is because by default ACPI is enabled and causes problems.