Everytime I try to play lockdown I get disconnected when the game starts. I have no idea why, this has never happened on my other computer.

I am running the game using Windows XP (Service Pack 3) Compatibility mode on Windows 7.

Here is the Projectx log:

2012/01/28 17:09:43:495 INFO I$a.b: Logging to 'C:\Users\N\AppData\Roaming\Three Rings Design\Spiral Knights\.\projectx.log'.
Loading: net.java.games.input.DirectAndRawInputEnvironmentPlugin
2012/01/28 17:09:54:987 INFO I$a.b: Connecting [host=game.spiralknights.com/184.73.171.156, port=47624]
2012/01/28 17:09:56:385 INFO I$a.b: Datagram connection established [port=47624]
2012/01/28 17:10:00:577 INFO I$a.b: Moving at request of server [zoneId=16777217, sceneId=1]
2012/01/28 17:10:01:332 WARNING I$a.b: Failed to find property. [name=portal, object=[actor=null, location=[]]]
2012/01/28 17:10:01:333 WARNING I$a.b: Failed to find property. [name=scene_id, object=[actor=null, location=[]]]
2012/01/28 17:10:01:548 WARNING I$a.b: Failed to find property. [name=conditions, object=[tag=, all=false, target=[]]]
2012/01/28 17:10:01:796 INFO I$a.b: Issuing zoned moveTo(1:1, 1, 83).
2012/01/28 17:10:01:937 INFO I$a.b: Connecting [host=/50.17.84.115, port=47628]
2012/01/28 17:10:06:082 INFO I$a.b: Issuing zoned moveTo(1:1, 1, 83).
2012/01/28 17:10:06:227 INFO I$a.b: Datagram connection established [port=47628]
2012/01/28 17:10:06:256 INFO I$a.b: Updating outgoing message throttle [msgsPerSec=15]
2012/01/28 17:10:30:933 WARNING I$a.b: Long invoker unit [unit=News Reader (class com.threerings.projectx.client.aJ), time=1242ms].
2012/01/28 17:11:25:131 INFO I$a.b: Connecting [host=/50.19.129.64, port=47629]
2012/01/28 17:11:29:157 INFO I$a.b: Issuing zoned moveTo(2:0, 1073742005, 0).
2012/01/28 17:11:29:448 INFO I$a.b: Datagram connection established [port=47629]
2012/01/28 17:11:29:506 INFO I$a.b: Updating outgoing message throttle [msgsPerSec=45]
2012/01/28 17:11:29:698 INFO I$a.b: Got updated scene model [placeId=1574, config=[type=data.ArenaSceneConfig, amX=null, amY=true], scene=1073742005/%dungeon:m.lock_08/1]
2012/01/28 17:11:33:192 WARNING I$a.b: Failed to find property. [name=action, object=[tag=, all=false, target=[]]]
2012/01/28 17:11:34:037 WARNING I$a.b: Failed to find property. [name=shape, object=[expansion=0.0, location=[]]]
2012/01/28 17:13:01:448 WARNING ae.isLoggable: Previous message repeated 2 times.
2012/01/28 17:13:01:448 INFO I$a.b: Connection failed
java.io.IOException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
at sun.nio.ch.SocketDispatcher.read0(Native Method)
at sun.nio.ch.SocketDispatcher.read(Unknown Source)
at sun.nio.ch.IOUtil.readIntoNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.read(Unknown Source)
at sun.nio.ch.SocketChannelImpl.read(Unknown Source)
at com.threerings.io.r.a(SourceFile:106)
at com.threerings.projectx.client.D.pF(SourceFile:107)
at com.threerings.presents.client.BlockingCommunicator.pE(SourceFile:486)
at com.threerings.presents.client.BlockingCommunicator$c.hu(SourceFile:699)
at com.samskivert.util.T.run(SourceFile:60)
2012/01/28 17:13:01:449 INFO I$a.b: Connection failed
java.io.IOException: An existing connection was forcibly closed by the remote host
at sun.nio.ch.SocketDispatcher.write0(Native Method)
at sun.nio.ch.SocketDispatcher.write(Unknown Source)
at sun.nio.ch.IOUtil.writeFromNativeBuffer(Unknown Source)
at sun.nio.ch.IOUtil.write(Unknown Source)
at sun.nio.ch.SocketChannelImpl.write(Unknown Source)
at com.threerings.presents.client.BlockingCommunicator.b(SourceFile:399)
at com.threerings.projectx.client.D.b(SourceFile:73)
at com.threerings.presents.client.BlockingCommunicator$d.hu(SourceFile:783)
at com.samskivert.util.T.run(SourceFile:60)