I have just installed postgresql ver. 6.5 on redhat linux 5.2 and Slackware 3.4. The postgresql installed properly and regression tests were working fine but when i used libpq++ and libpq for connecting to database it could not connect to the database in both the systems. All the queries are working fine when i tested on psql. The programs are working fine in my previous version 6.3.2. The precompiled program which i compiled on older 6.3.2 are working fine in ver 6.5. But the programs compiled using the 6.5 libpq and libpq++ are not connecting to the database even. Thanks in advance for your help.