You guys will love this:
7.42 was the version on the Lenovo's. 7.61 fixed the Win7 to Win7 data transfers. Under either version our database connectivity was fine. Just SMB/CIFS issues.
I update to 7.61 and it breaks our credit card processing. You go to enroll a swiped card for a token id (PCI compliant we don't store CC data just a token identifier) and it stalls. Can't even swipe for at time of puchase (card present).
Switch back to 7.42 and our CC swiping works.
So 7.62 goes onto the the Lenovo that is hosting the data (it doesn't have a CC Swipe and is strictly file/print/db serving) and 7.42 goes on the two front desk workstations. Win7 to Win7 transfers work.
This is some of the most bizarre behavior I have witnessed over the last 16 years of doing Windows networking. I haven't had driver issues like this since Windows 3.11 WFW and the 3Com 3c508 ISA Red Nics with Netmanage TCP/IP stack (used to call it NetMangled).