There was a huge "flight to safety" when the bank bailout program started. Frost was one of those banks that people moved their cash to, because of its reputation as a safe, sound, conservatively managed bank.
I believe Evans stated yesterday in FTW that the cash is at the Fedreserve collecting minor interest. My humble opinion - this economy will not take off until the Fed starts raising interest rates. 1) it will push people to buy homes/mortgages for fear of interest rates ging up. And sellers to sell fearing buyers will be unable to afford at the higher interest rates. 2) trillions sitting on corporate balance sheets, at the Fed Reserve, CD's, passbook savings and mmf's collecting microscopic interest. Nothing like "passive" income from these types of accounts to make people feel they are getting free income. And 3) it will signal to all that the Fed believes the economy is on the mend and better days are ahead. And maybe, just maybe our governments (fed, state, local) will quit issuing wallpaper because they can not afford the higher interest rates. Nothing like a side bonus!