The 10 Tech Companies With The Most To Prove In 2011

The technology industry is littered with the carcasses of once-hot startups and obsolete giants.

As 2010 ends, several tech companies face once-in-a-lifetime challenges.

If they meet these challenges in 2011, they'll look back some day and raise a toast to how they persevered. If not, their investors and employees will feel the consequences.

Here are the ten tech companies with the most to prove in 2011.