connectivity problems with INFORMIX-NET on Solairs 2.6

All, We have the recently installed INFORMIX-NET on our Solairs 2.6 box and I have complied a demo program using esql(INFORMIX-ESQL Version 9.21.UC1). The version of INFORMIX-NET installed is 5.10.UC7. Upon the execution of the program the program's connect call terminates with the following error message. sqlca: sqlcode:-25574 sqlerrm: '' sqlerrp: '' ... $ finderr 25574-25574 Network driver cannot open the network device. A system call has failed. See the UNIX system administrator for assistance. ------------------ Called Informix support, but no Luck. They said that it is an error related to Operating System and no leads. Looked up the iiug's mailing archive but couldn't find any items realted to 25574 on Solaris 2.6. Do I need any O/S related patches ???? Did any one of you out there have/had similar problem ? Is there any one who is succesfully connecting with the above mentioned products on Solaris 2.6 ? Thanks GSRao