If you do patch, make a backup first.

Archived topic from AOV, old topic ID:145, old post ID:597
Archived topic from AOV, old topic ID:145, old post ID:613Client Patch 5.0.7.2
Jan 17 2007 8:49PM GMT (PST +08:00)
On Wednesday, January 17, 2007 at 1:00PM PST (January 17 9:00PM GMT), we will deploy Client Patch 5.0.7.2
Details for the patch are as follows:
* Rock mounds under snow will no longer block movement
* Added live event content
If patched correctly, your current version will display 5.0.7.2 for both clients. If you have any difficulty receiving this patch, please check the following:
Check the "Patch" directory within your Ultima Online directory (the default location is C:Program FilesEA GamesUltima OnlinePatch).
This directory should be empty. Any files in this directory should be deleted.
Run a virus scan on your computer. Undetected viruses may cause conflicts with patching Ultima Online. For information on up-to-date virus detection software, please visit http://www.mcafee.com.
If after trying the above, you are still experiencing difficulty patching the Ultima Online client, please visit this web page.