A few hours when I last checked it was at around 3GH, all of sudden it jumped an extra 50 GH?

Checked it on the pool I'm on and then on the wallet to double check and it seems to be correct.

I know its a good sign but wondering why the sudden huge increase in mining.

anyone notice total Network Hashrate ~ 53 GH!!!

Diff:

Difficulty:277.96212535
Est Next Difficulty:737.21514668 (Change in 9 Blocks)

Are these correct readings?

people are buying  and selling for a few satoshis for quick profit. Those sell walls do scare off buyers.