Hi Antituhan,
Some of those queries look to have been running for quite a long time and that exception occurs when a global kill is issued.
Can you provide details what was happening on the server before these issues occurred?
Can you provide any details about the system to which those connections belong? You should be able to see the IP of the server which invoked the connection to determine.
Do you have MMS enabled or some other form of performance statistics available?
Cheers,
David