Hi Farzan
Please ensure you are using the latest version JLive! Chat v4.0.8.
Please ensure your webserver has keep-alive enabled and the keep-alive timeout set to at least 3 to 4 seconds.
Other than that... depending on what kind of mac you are using... macs are usually configured to turn off the Internet connection when in standby mode:
support.apple.com/kb/HT2412 support.apple.com/kb/HT1776 I would recommend digging around in the energy saving preferences to see if there is an option to NOT have the Internet connection disabled when in standby mode.
Please also see this thread about standby mode:
forums.macrumors.com/showthread.php?t=857778 Best Regards,
John