There are several threads on this issue, but this has the latest post, so I'm adding my comment here.
This is still an issue. I have a very hard day in the timing room today. Timers took times perfectly. USB connectivity between the Timy and the computer was dropping many times.
As other people have pointed out, there are too many variables.
I did not have this problem even once last year. What's changed? 1) A brand new building with other evidence to suggest that the power is not super reliable. 2) A brand new timing computer (cheapest Toshiba they make) running a new operating system (Windows 7 as opposed to XP). 3) New printers and monitors plugged in on the same circuits. 4) Just updated to the new Timy firmware this past week (but issue existed earlier this season). 5) Latest version of Split Second.
At this point, I'm just glad to know that it's a known issue with no clear cause. And, I'm pretty much just posting this to keep the discussion alive.
I'm frustrated, but my results are up on FISSKI.com, and everybody got a system A time (eventually). I'll keep working on it...
-DI