The best thing I would do right is to hold on to my shares or even add a few more to my current holding. As CLL remains a long term investment for me as the future looks more promising as the company moves forwards. Even though the markets does not look too promising because of the external factors related to the subprime issues that may inturn have some recessionary effects.
However, CLL's fundamentals remains intact as they continue to increase their production from POD1. An are waiting to get POD2 under construction once they get the nod from the EUB.
If you take a look back during 1997 (tech melt down). RIM's share price was trading quite high to a point and bang they dropped with the overall markets. But they have recovered very nicely and had several stock splits in the past many years as their business grew and having techology advances.