Getting::message type 0x43 arrived from server while idle

Hi All,

I am using the postgres database in one of my project.
 I am getting "message type 0x43 arrived from server while idle"  messages
 while querying the database and getting erroneous results.

I am using libpq library for querying database.
I am having two different processes accessing the same database.

I am hoping to read soon.

Regards,
Rashid