Tonight I downloaded the installer we have linked on the WP site and did a fresh install and patch of UO. I did extra virus checks with NOD32 at each step of the process. I encountered absolutely no virii or malware of any sort in either the files we have linked, or the patches from EA.
GhostRiderGrey
Also, based on the name of the patch files you are getting [aos2d_win32_5-0-0a.rtp] I can tell that you are not using the UO installer we have linked. When the one we have linked does it's patching, the naming of the patches is similar to this [uoml_win32_5-0-0a.rtp]