*Just a brief note but I will add more to this later:
Riverbed Technologies (RVBD) IPOed about 180 days ago. What happens after 180 days there is a 'lock-up' in shares meaning that options will expire, hence leading the stock to drop from being oversold. (You can look up SEC filings to find the exact dates). Currently, the stock is at a 5-month low to below 27 on no news, except that news sources are justifying it by talking about the IPO of BigBand Networks (BBND) which is not even a competitor.
Usually after a lock up the stock ends right back up to where it started selling off, and given the further research I've done on Riverbed I'm confidant that this will be another one of those stories.