The following commentary comes from an independent investor or market observer as part of TheStreet's guest contributor program, which is separate from the company's news coverage."It takes 20 years to build a reputation and five minutes to ruin it. If you think about that, you'll do things differently." -- Warren Buffett. NEW YORK ( TheStreet) -- Although Bank of America ( BAC) has been around much longer than 20 years, over the past 36 months, the bank has experienced many such events lasting longer than "five minutes" that it would gladly have taken back if it could. The company will be forever tied to several "five-minute events" -- not the least of which is the fact that it is perceived to be as one of the primary drivers of the financial crisis, bringing to the forefront the infamous words "too big to fail." But until the U.S. foreclosure crisis comes completely to a halt, it is hard to say with any certainly to what degree Bank of America must work to restore its reputation. But it's not because it isn't trying.