I was trying to configure the Office Sharepoint Server Search through the central administration, but whenever I hitted the Start link I got the message:
“An unhandled exception occurred in the user interface. Exception Information: OSearch (Administrator)”.
First thought went to the service accounts configured on the several sharepoint services, but the problem persisted.
Later I figured it out. It had to do with the configuration of the Farm Search Service Account, which must be in the format DOMAIN\USERNAME.
Hope it saves you some time…