ERROR reading: No readable socket

Hey!
Ive been looking thru forums searching solution for this error, but most ppl who encounter it messed up with ip, or rcon ip, or i might just missed something.
In my case B3 runs perfectly fine for about 20-40 min then i get this error, and it stops.

Code:

090907 16:47:00 VERBOSE RCON sending (8.12.17.117:28960) status
090907 16:47:01 ERROR RCON: ERROR reading: No readable socket
090907 16:47:01 VERBOSE RCON: retry sending status...
090907 16:47:02 VERBOSE RCON sending (8.12.17.117:28960) PB_SV_PList
090907 16:47:02 VERBOSE Queueing event Game Exit executed
090907 16:47:02 VERBOSE Parsing Event: Game Exit: TkPlugin
090907 16:47:02 DEBUG TkPlugin: Map End: cutting all tk points in half
090907 16:47:02 CONSOLE 120:50 ShutdownGame:
090907 16:47:02 VERBOSE Parsing Event: Game Exit: StatsPlugin
090907 16:47:02 DEBUG StatsPlugin: Map End: clearing stats
090907 16:47:02 CONSOLE 120:50 ------------------------------------------------------------
090907 16:47:02 VERBOSE Parsing Event: Game Exit: PingwatchPlugin
090907 16:47:02 CONSOLE 120:50 ------------------------------------------------------------
090907 16:47:02 VERBOSE Parsing Event: Game Exit: SpreePlugin
090907 16:47:02 CONSOLE 120:50 InitGame: \_Location\^5Chicago, IL\_Maps\^1Best CoD4 maps\_Mod\hardcore\_Website\^3www.dfclan.net\g_compassShowEnemies\0\g_gametype\war\gamename\Call of Duty 4\mapname\mp_killhouse\protocol\6\shortversion\1.7\sv_allowAnonymous\0\sv_disableClientConsole\0\sv_floodprotect\1\sv_hostname\^0=DF= ^1HC TDM^3B3^5killhouse\sv_maxclients\12\sv_maxPing\150\sv_maxRate\25000\sv_minPing\0\sv_privateClients\0\sv_punkbuster\1\sv_pure\1\sv_voice\0\ui_maxclients\12
090907 16:48:00 VERBOSE RCON sending (8.12.17.117:28960) status
090907 16:48:00 VERBOSE StatusPlugin: Building XML status

Exits most of plugins and ends with

Code:

090907 17:11:00 VERBOSE RCON sending (8.12.17.117:28960) status
090907 17:11:30 VERBOSE RCON sending (8.12.17.117:28960) status
090907 17:12:00 VERBOSE RCON sending (8.12.17.117:28960) status

Any help would be greatly appreciated!