hi cfb

that is the meaning of variables height ? is it :
for the blockchain : the last block actually ''mining'' or compute for the whole blockchain
and for a personal account : the number of block compute since the account unlocked for the first time

? 

By example : Nxt start on 24 november :
Hypothesis : 1440 block compute per day
Suppose we are now 28 november midnight and i unlocked my account for the first time on 27 november at 0 am after midnight:
height of blockchain is 1440 * 4 days = 5760 (blocks since the start of nxt currency)
height of my account is 1440 * 2 days = 2880 (block since the first unlocked of my account)



I hope i'm clear ....

thanks