TdsInputBufferError not 0 in LoginTimers errors of RING_BUFFER_CONNECTIVITY of sys.dm_os_ring_buffers
I can't give you answer but I can direct you towards it.


You need to download the public symbols for your installed
version of SQL Server
http://www.sqlskills.com/BLOGS/PAUL/post/How-to-download-a-sqlservrpdb-symbol-file.aspx
You need to able the Trace Flag which shows the public function names for
that Stack Trace using DBCC TRACEON(3656) with reference to this blog
Report the public symbol names for those frames back to us or
Microsoft CSS (Customer Support Services)