It does seem to go on continously more often if I keep hitting the top left quadrant of buttons (1, 2, 4, 5). But it's not 100% reliable. I'm going to get a new battery before calling support - I just wondered if it had been a known issue.

It doesn't seem to be a button getting stuck or anything, because it does just shine out as if there's a direct link between battery and led - it doesn't flicker a code continuously or anything.

Cheers,

A.