I love my Garmin Colorado 300 ... when it works well. However, yesterday I experienced my first lock-up.
I experienced this with GCPAG7 (in Union City, CA - SF bay area). I looked at the long_description and noticed that it has 7 levels of font declarations that do "nothing", and more. However, on many caches that when I click on them the unit will not give the direction arrow and the compass won't direct me to the cache. This happens a lot to me, and this irritates me the most.. Here's an example: GC1399H .
Garmin Colorado 300
2.5 (April 7, 2008 - I think)
Linux/Ubuntu - I copy the GPX files directly to the unit which presents itself as a USB media drive.