When you run the Upgrade Advisor, you get a report with a warning telling you “Full-Text Search Word Breakers and Filters Significantly Improved in SQL2005.” What do you need to do before upgrading?
(Most warnings will not prevent you from upgrading to SQL Server, and the “Full-Text Search Word Breakers and Filters Significantly Improved in SQL 2005” message is just informing you that full-text search will work a little differently after the upgrade. Also, the /NoFTSCheck option doesn’t exist.)