I have released version 1.1 of the windows client.  It now displays the real keys per second between ranges.

It will also exit smoothly if the prize key is found with a message instead of trying to continue to request ranges.

It can be downloaded from the pool stats page.
http://www.ttdsales.com/64bit/

If someone out there could tell me if the ubuntu version is working well I will implement the changes to that version as well.

I only have linux in vmware so can not test with a GPU.