Garmin 305

[mr_cellophane]

Is there something wrong with my 305. Most of the time it works fine, but one day last week I apparently did over 500 mph and on Sunday I crossed the Thames twice in-between bridges.
Is it normal for a GPS to get occasionally confused or is this symptomatic of something more serious.

 

[yello]

Stuff can interfere with any cycle computer, and the Edge is no exception. There could well be more 'stuff' in your area.

But give Garmin support a call. They are pretty good and if the unit's still under warranty they'll have no hesitation in swapping it for you if there's a problem.