freeradius + mssql error

Dear I have useing freeradius with mssql and it was working fine but last day when i restrat radius server i got error like this '22018 [unixODBC][FreeTDS][SQL Server]Syntax error converting the datetime value '1900-01-01' to a column of data type int.' what is this ?? Satish Patel $ cat ~/satish/url.txt System administrator ( Data Center ) please visit this site http://linux.tulipit.com --------------------------------- Here’s a new way to find what you're looking for - Yahoo! Answers