Came across a PSOD on one my lab manager hosts. The error read:
LINT1 motherboard interrupt. This is a hardware problem; please contact your hardware vendor
According to Dell, this occurs because the C1E setting is enabled in the BIOs. This post helped me from EnterpriseAdmins.org.
Finally, it’s mentioned in Page 15 of the vSphere 4.0 Best Practices Guide for recommended hardware BIOs settings. Guess I need to work w/ Dell to do this for me before sending me an ESX Server.