Battery Cycles and discharge when plugged in

Hi all,
Couple of questions from a newbie unibody MBP owner.
1) My battery is draining slightly even when I have it plugged in. Over 3 days using it plugged in and shutting down in between, my charge goes from 99% down to 95 and triggers a recharge. Is this normal?
2) My battery seems to add cycles every time I charge it - even if I've only used it on battery for an hour of plain browsing. Aren't cycles meant to reflect accumulated discharge rather than number of charging events?
Battery has been calibrated twice since I received it 2 weeks ago.
Thanks in advance for your help.

Thanks for your reply Mr Engineer.
So re the charge cycle, it shouldn't be adding whole cycles to the count each time I only used a small a amount of charge, then recharge. IE - 1 cycle should = 10 x (using 10% of the battery, then recharging).
Since mine is adding cycles each time I recharge, is this likely to be a software or a hardware(battery) problem, and how do I get it fixed - just call AppleCare?
Many thanks

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