Out of memory error

Hello,

My deployment is Postgres 9.3.5 on a Windows machine.

Would someone tell me why I am seeing the following Postgres logs?

07:56:20 EST LOG: 00000: execute <unnamed>: SELECT * FROM "c3p0"
07:56:20 EST LOCATION: exec_execute_message, src\backend\tcop\postgres.c:1906
07:56:20 EST LOG: 00000: execute <unnamed>: SELECT * FROM "c3p0"
07:56:20 EST LOCATION: exec_execute_message, src\backend\tcop\postgres.c:1906
07:56:20 EST LOG: 00000: execute <unnamed>: SELECT * FROM "c3p0"
07:56:20 EST LOCATION: exec_execute_message, src\backend\tcop\postgres.c:1906
07:56:20 EST LOG: 08P00: incomplete message from client
07:56:20 EST LOCATION: pq_getmessage, src\backend\libpq\pqcomm.c:1143
07:56:20 EST ERROR: 54000: out of memory
07:56:20 EST DETAIL: Cannot enlarge string buffer containing 0 bytes by 1157627900 more bytes.
07:56:20 EST LOCATION: enlargeStringInfo, src\backend\lib\stringinfo.c:268
07:56:20 EST LOG: 00000: disconnection: session time: 0:01:59.960 user=xxxxxxx database=xxxxxx host=xxx.xxx.xxx.xxx port=57736

What is happening here? Is it of concern? Will tuning the DB memory parameters help avoid this?

Thanks,
Chris