(Q) HELP for SQLWINDOWS with INFORMIX

I have some problems with SQLWINDOWS (client) and INFORMIX On-Line (server). I'm using : Version Informix On-Line 5.1 INFORMIX-NET for Windows 5.01.WF1 SQLWINDOWS 5.0 (GUPTA) First problem : When I test a connexion from my PC (client) to host server Informix, if I use the program ILOGIN, I have no problem. ILOGIN returns the error code -951 or -952. But if I test the same thing with a SQLWINDOWS application, the result is that my PC hang.I must reboot my PC, or I must kill the child of sqlexecd (Informix process deamon ) on the host server. ( I write a deamon to do this automatically and check periodically the existence of an unique sqlexecd ) I think there is bad communication between SQLIRTW.DLL and I-net Second problem : If I update SQLWINDOWS with the 5.0.1, I have an error in SQLIRTW.DLL (Gupta library driver for Informix) Why ??? Thanks for your help and sorry for my english. Merci d'eclairer ma lanterne. ;-) =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= Raoul YARHI email: <rao@up8.univ-paris8.fr> =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=