This bug was originally marked as duplicate of bug 213009, that is already resolved. This bug is still valid, so this seems to be another bug, but it might be related.

Build: NetBeans IDE 7.4 (Build 201310111528)
VM: Java HotSpot(TM) 64-Bit Server VM, 24.0-b56, Java(TM) SE Runtime Environment, 1.7.0_40-b43
OS: Windows 7

User Comments:
duncank: My JIRA service has stopped working.

When trying to Validate the service, this exception is occurring.

I have tried uninstalling the plugin and re-installing it as well as removing the service and re-adding it.

GUEST: Using Jira plugin.

Clicked on "Find issues" and received error.

GUEST: Opening an issue in Jira v5.1.6#785
In the Find Tasks grid this issue not shows issue key, but can be opened with this exception




Stacktrace: 
java.lang.LinkageError: javax/xml/soap/MimeHeaders
   at org.eclipse.mylyn.internal.provisional.commons.soap.CommonsHttpSender.addContextInfo(CommonsHttpSender.java:528)
   at org.eclipse.mylyn.internal.provisional.commons.soap.SoapHttpSender.addContextInfo(SoapHttpSender.java:73)
   at org.eclipse.mylyn.internal.provisional.commons.soap.CommonsHttpSender.invoke(CommonsHttpSender.java:162)
   at org.apache.axis.strategies.InvocationStrategy.visit(InvocationStrategy.java:32)
   at org.apache.axis.SimpleChain.doVisiting(SimpleChain.java:118)
   at org.apache.axis.SimpleChain.invoke(SimpleChain.java:83)