Thanks for sharing!
I have used Garmin Mobile PC with Globalsat USB GPS BU-353 for almost a year now, 6 days a week / 12 hours a day, but I haven't noticed the issue you have described. I use the default Windows Vista power management settings:
- USB selective suspend settings:
Perhaps the reason why I experienced no problems is due to the fact that my laptop is always plugged in.
- On battery: Enabled
- Plugged in: Disabled
Laptop GPS World