The bad news: someone dumped a lot of shares. Today's volume was approximately 4 x average. The good news is price dropped only about 4.9% on that volume. If it were a short-attack, it didn't work, probably because of market's confidence in management based on history of sales, profits and earnings.
Jefferies said Akamai guidance was reiterated but the company is reclassifying the tax treatment of a few items, which is causing confusiton. The analyst said the reclassification's are all non-cash related and there is no change to cash flow estimates.