For some odd reason Seagate is working very hard not to support x64. When the FreeAgent series of external HDDs was launched many who reviewed them thought they were excellent with one minor problem. No support for XP x64. I myself took a look at the FreeAgent|Go 500GB and while I had problems in XP x64 it ran flawlessly in Vista x64 even without official support.
Today my Seagate Manager informed me I had an update to run. Thinking this would be performance and or feature enhancing I happily downloaded it.
All seemed to be well until I got to the installation where I was told that I needed to have Vista or XP 32 Bit version to run the Seagate Manager software.
Considering the movement towards x64 is growing I am not sure why Seagate would choose to take a step backwards. But not matter the reason I do not think I will be upgrading my Seagate Software again anytime soon.