Does paypal usually do this?

Ok so I sold an item on ebay and I was led to believe that once the buyer had recieved the item and left positive feedback that the money would no longer be on hold in my paypal account.

I have recieved positive feedback (ive also left feedback) and the item has been recieved but I still cant use the money that was paid into my account, its still on hold.

Its been 24 hours since I recieved positive feedback but on my paypal account it says "on hold - post now"
This is so frustrating