i was on iphone 4 v4.3.3, jailbroken with pwnage tool 4.3.3.1
since it was an apple factory unlocked iphone, i updated to iOS 5 thru iTunes 10.5
restored with back up, working fine

BUT issue is, now my 16 GB phone is showing capacity of only 13.7 GB in settings/general/about
Q - have i lost that 2.3GB forever due to earlier jailbreak, before updating to iOS 5
or there is some way to recover that 2.3 GB

i think jailbreak probably creates a partition for Cydia
will i loose another substantial couple of GBs again due to jailbreaking again?

please help me out on this before i jailbreak again
thanx