A compromised account dumps its coins and the price briefly falls to a cent. Mt. Gox halts trading and rolls the trades back.
The bitcoin will be back to around 17.5$/BTC after we rollback all trades that have happened after the huge Bitcoin sale that happened on June 20th near 3:00am (JST).
Mt. Gox Support Desk · June 2011
SATOSHI ON SCALABILITY
The design outlines a lightweight client that does not need the full block chain. In the design PDF it's called Simplified Payment Verification. The lightweight client can send and receive transactions, it just c…