Solved Connection reset after 2 hours and 20-50 min

Hey guys, this started happening (maybe less) a week go and this is

What happens:

1) Server runs smooth as silk at 20tps with 10-20 people online without any problems
2) After 2 hours and 20-50 minutes (I've counted several times) server gets the [INFO] Connection reset in console followed by everyone getting "x lost connection: disconnect.endOfStream"

Example:

Code:

2012-06-02 18:36:18 [INFO] Connection reset
2012-06-02 18:36:19 [INFO] smokeman420 lost connection: disconnect.endOfStream

What I've tried:

- Remove most plugins to test if they had something to do with it ( Error still there )
- Updated all plugins to newest versions ( Error still there )
- Used NoLaggExamine to check for high plugin resource usage etc ( Even WHILE server lags out - Everything seems normal )
- Removed those plugins to check if that would help ( Error still there )
- Talked to various plugin authors to try find out what's going on and none say it is an error caused by their plugin. ( Error still there )
- Checked bukkit dev pages for comments / tickets about this ( Nothing there )
- Checked configs of plugins for timers thats close to 2 hours and 20-50 min ( Error still there )


Info:

OS: Ubuntu 10.04
java version "1.6.0_20"
OpenJDK Runtime Environment (IcedTea6 1.9.13) (6b20-1.9.13-0ubuntu1~10.04.1)
OpenJDK 64-Bit Server VM (build 19.0-b09, mixed mode)
CraftBukkit version git-Bukkit-1.2.5-R3.0-b2203jnks (MC: 1.2.5) (Implementing API version 1.2.5-R3.0)


Plugins:

RangeBans, WorldEdit, CoreProtect, xAuth, MobSpawnControl, SkylandsPlus, BKCommonLib, Vault, Multiverse-Core, PermissionsEx, Votifier, UltraBan, Herochat, LWC, mcMMO, WorldGuard, Essentials, NoLaggExamine, EssentialsSpawn, Multiverse-Inventories, VanishNoPacket, ChestShop, AntiCheat.

Other notes:
I think people will point at xAuth but this also happened with AuthMe, not sure if they use same code or something.
I have yet to run it without any (0) plugins at all to see if problem still occours. ( tiny bit short on time )


If anyone could give me a pointer or help me figure this out its greatly appriciated.

Thanks

 

Hmm.. OpenJDK? I recommend taking the normal JRE/JDK. And while doing that, upgrade it to java 1.7

 

Does it happen to random people or the same people every time?

Edit: I support what Lolmewn said.

 

I will look in to that, thanks.

Edit: Going to do it later, rather many people on the server so don't want to ruin their saturday.
Edit 2: Installation finished, waiting for results now.

It happens to every single user who is online.