SIP Plug-in looses connection with FreePBX when idle

I am running Spark RC1 on Win-XP with OpenFire 3.6.4. When leaving the Spark client open and idle for approximately 20 hours, the SIP Phone Client menu bar displays a “Searching…” status (or some such similar phrasing). Exiting the spark client and restarting it also reestablishes the SIP Phone connection.

I am reporting it here since the Spark project pages says to report bugs in the Discussion Forums.


So, this happens only after a such long idle time or even after a 5 minutes idle? Can it be a FreePBX dropping such idle connections by chance?