Finally after 2 weeks of bugs the PTZ  display is now accurate , the Lockerz announcement via Facebook:

We updated more than 2 million accounts this weekend with accurate PTZ display balances. More to come. Friends display error remains and we’re working on this now. Thanks.

The fixed bug :

 

Update 27/10/2009 – friends joined display bug is also fixed now !

The “Friends Joined” display on the MyLocker page is fixed for all members! The display will now show your correct number of accepted friends.