So over the last week I've seen my Milestone develop some strange behaviour where overnight it will drop from 40-100% (depending) battery power to dead. This is after killing all open applications so I am reasonably certain its not a case of having left multiple apps running. It seems variable as to when this will happen - I've had the phone with me while out and about and the battery has gone 36 hours without a recharge following minimal usage. Yesterday I recharged in the evening and the phone was dead less than 12 hours later. This is rendering the phone pretty much unusable and I am at a loss to explain the behaviour since the one time I have picked the phone up before it was fully discharged in a similar situation the largest user of the battery was claimed to be the DISPLAY! (and I could SEE that that had been off). Any advice in trouble shooting this issue?