My settings are:
Update interval=1
HotGPS=Yes
Smartupdate=yes
Cache=100
Everything else I left default value.
Here's an example of what I'm talking about, this is a map of my trip to work today, notice the big area between 96 and 100 where there's no data:

Is there anything I can try??? How big can I set the cache number on the i290? I'm not sure of how much internal memory it has so I didn't want to increase it to much until I find out. I like the software, but do need a way to monitor/track speed and total mileage for company report. It's easier using this than having to pull out my GPS unit out of my car everytime to download a report.