Am I the only one shocked by the amount of known issues in the new vSphere 5.5?
vSphere 5.5 Release Notes
Seems to me the product was release just a little too early... Also, they already created KB articles for failing upgrades:
VMware KB: Upgrade from vSphere 5.1 to vSphere 5.5 rolls back after importing Lookup Service data
VMware KB: Installing or upgrading vCenter Single Sign-On 5.5 fails with the error: vCenter Single S...
Maybe they are in too much of a hurry because they want the software released prior to VMworld 2013...
I know I will be waiting some time before I upgrade. Probably won't be long before a 5.5a will show up