RodBearden said "Perhaps if a few more testers had been involved, progress would have been better."
Rod, the number of testers isn't the problem. I always provided fast turnaround on testing, with comprehensive feedback on faults found, things fixed, suggestions, etc. I must have put in hundreds of hours to testing of AirNav products, both hardware and software. Many hours spent testing a new version that didn't even deliver the fix it was meant to, and also broke something else that previously worked.
I've been a testing manager in the past (UAT, Regression, etc.), but nothing like testing AirNav products. My experience of Airnav beta testing is endless frustration as you wait for the developer to become available again to work on something you gave feedback on weeks ago.
The solution isn't to have more testers. The solution is more developers, or at least developers who have the time to work on the software rather than doing their other job.