I have three different 28 days cycle Auction Rate Securities. They are: CLOUGH GLOBAL OPPORTUNITIES FD AUCTION MKT PFD SER TH28 (THURS) 5.7% NXT AUC 9-13-07 ING CLARION REAL ESTATE INCOME FUND AUCTION MKT PFD SHS W (WEDNESDAY) 5.31% NXT AUC DT 8-22-07 REAVES UTILITY INCOME FUND AUCTION MARKET PFD SERIES B 5.27% NXT AUC DT 8-22-07 All three ate AAA rated. In your opinion, should I sell these and go to cash? My broker swears I am fine with these. What is your opinion? Thanks in advance.