Interesting - I did not use 6.5 but I have a client still using 6.0 (35 users)with VFP tables - no data issues of any sort. They don't use PO much but they pound on SO and AR. They also have a few users using citrix. I'm sure you have checked all the normal issue with the network. BTW the biggest issue my client has is with performance - if someone run a big report all users are effected.
I can tell you that AM does not provide all the data access code and there have been many reports of minor issues with reporting (AM uses CR).
John
John Fabiani
Woodland, CA