Intermittent warning light?

Hi all.

When I start up my furby from cold, all the warning lights illuminate and extinguish as normal.

After even a short run (newsagents and back for example)

when I switch ignition back on again its as above but the temperature light flashes fast a few times

almost like a flickering effect and then goes out as normal... :S (It goes out after a second or two)

Anything to worry about?

PS All fluid levels are right and car is running and driving normally.