IPhone battery usage stats misleading ?

Hi All,
Something I've just noticed with recent firmware versions (I believe since 3.0) is that the meaning of the "Standby" figure in the time usage stats, has changed and become misleading.
It states "Time since lasat full charge", and has a Usage row and a Standby row.
Now I may be crazy but I'm SURE that the Usage row use to (before 3.0) represent the time that the phone was AWAKE (eg, in use and/or screen on) and the Standby time represented the amount of time the phone was asleep. (screen locked, no 3rd party apps running, waiting for a call etc)
For example it might say Usage 4 hours, Standby 6 hours, which meant that the phone was awake for 4 hours, asleep for 6 hours, for a total of 10 hours.
Not so anymore! Now it seems that the Standby figure counts both asleep and awake time. So in the above example the real situation is the phone has been 6 hours since last charge and 4 of those hours it has been awake.
So really the "Standby" field now means "Time since last full charge", and to work out the true standby time, you must subtract the usage figure from the "standby" figure.
Why would Apple make a change like this ? Surely this is a bug ? Has anyone else noticed this discrepancy ?
Regards,
Simon

DBMandrake wrote:
Not so anymore! Now it seems that the Standby figure counts both asleep and awake time. So in the above example the real situation is the phone has been 6 hours since last charge and 4 of those hours it has been awake.
This is how i understood the stats to be since the beginning. Had the first-gen and am now on the 3Gs.

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