Closing session due to exception [sparkweb can't register]

2008.09.25 16:55:54 Closing session due to exception: (SOCKET, R: /192.168.1.150:3244, L: /192.168.1.150:5222, S: 0.0.0.0/0.0.0.0:5222)
org.apache.mina.filter.codec.ProtocolDecoderException: java.lang.Exception: Disallowed character (Hexdump: 3C 3F 78 6D 6C 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 3F 3E 3C 66 6C 61 73 68 3A 73 74 72 65 61 6D 20 74 6F 3D 22 31 39 32 2E 31 36 38 2E 31 2E 31 35 30 22 20 78 6D 6C 6E 73 3D 22 6A 61 62 62 65 72 3A 63 6C 69 65 6E 74 22 20 78 6D 6C 6E 73 3A 66 6C 61 73 68 3D 22 68 74 74 70 3A 2F 2F 77 77 77 2E 6A 61 62 62 65 72 2E 63 6F 6D 2F 73 74 72 65 61 6D 73 2F 66 6C 61 73 68 22 20 76 65 72 73 69 6F 6E 3D 22 31 2E 30 22 20 2F 3E 00)
at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecF ilter.java:170)
at org.apache.mina.common.support.AbstractIoFilterChain.callNextMessageReceived(Ab stractIoFilterChain.java:299)
at org.apache.mina.common.support.AbstractIoFilterChain.access$1100(AbstractIoFilt erChain.java:53)
at org.apache.mina.common.support.AbstractIoFilterChain$EntryImpl$1.messageReceive d(AbstractIoFilterChain.java:648)
at org.apache.mina.filter.executor.ExecutorFilter.processEvent(ExecutorFilter.java :239)
at org.apache.mina.filter.executor.ExecutorFilter$ProcessEventsRunnable.run(Execut orFilter.java:283)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java: 885)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:907)
at org.apache.mina.util.NamePreservingRunnable.run(NamePreservingRunnable.java:51)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.Exception: Disallowed character
at org.jivesoftware.openfire.nio.XMLLightweightParser.read(XMLLightweightParser.ja va:210)
at org.jivesoftware.openfire.nio.XMPPDecoder.doDecode(XMPPDecoder.java:32)
at org.apache.mina.filter.codec.CumulativeProtocolDecoder.decode(CumulativeProtoco lDecoder.java:133)
at org.apache.mina.filter.codec.ProtocolCodecFilter.messageReceived(ProtocolCodecF ilter.java:163)
… 9 more
</htm

<?xml version="1.0"?>?

james12345678</passwo rd>?

because this character ‘?’ perphaps…