Problem with ODBC driver versions on windows

Windows XP - Informix ODBC driver 2.5 (32-bit OS and 32-bit driver) Windows 7 - Informix ODBC driver 4.10 (64-bit OS and 32-bit driver) Solaris 10, IDS 11.50.FC7 Server We are experiencing strange results running a report in Crystal reports, same version, on a Windows XP PC and a Windows 7 PC. Running the same report against the same database Instance, one PC is getting a positive number, around $400, and one PC is getting a negative number, around $-10. Has anyone seen this before; and if so, is there a fix or suggestion? We are going to upgrade the Windows XP PC, but for now we are looking for an answer. The correct results are on the windows XP 32-bit PC. Larry