Not that I expect you to have any problems upgrading to the SharePoint Technical Refresh, especially if you follow the instructions.

I tried upgrading my MOSS Beta 2 to TR and it failed but I think it may have been because the first server in the farm, that had the central admin site on it, had been removed. Even though the central admin had been added to the second server, the upgrade process insisted that there was another server in the farm that had to be upgraded and wouldn’t allow the site to run.

Why I like stsadm backup files:

Because you have to install binaries from scratch and create a new config db, you know there is no strange stuff hanging around in the DB or file system. After restoring the backup, you should have a pretty clean system which will increase the chances of a successful patch.

Key thing to consider before restoring the stsadm backup of your content is the database.

After creating the content database (via the WSS and MOSS central admin), extend it to cater for the size of the site, otherwise it will default to 10Mb (SQL Server Model db settings) and will increment it by 1 mb.

For a WSSv2 content DB, change the recovery mode to Simple otherwise you will have a transaction log that is larger than the data.