Same here - on a few occasions (very randomly) this summer when re starting the engine the starter would just click and not spin, if I immediately pushed the starter button again, hey presto, all would be good. I thought nothing of it and I put it down to a glitch!
However last week it happended but this time no luck on restarting - battery seemed as dead as a door nail. Luckily I was on my driveway and had tools to hand so I popped off the battery side cover and found that the battery earth terminal screw was loose (not hanging off loose - but just needed 3/4 of a turn to fully tighten) - I tightened the terminal and its been ok since. I also checked the pos terminal and that was OK.
Just for belt and braces! I checked the battery charge state afterwards and found the the battery was fully charged and in good condtion (using my Optimate).
David
