You have the V2 rollup installed for SP2.
SP0 = 7.1.13797.6797*
SP1 = 7.1.13851.6851
SP1V1 = 7.1.13851.6865
SP2 = 7.1.15280.8280
SP2V2 = 7.1.15292.8292
*Added the core non-service pack version of the agent from a fresh 7.1 install.
**The SP2 or SP2V2 version actually resolves an issue with high CPU utilization when trying to process a 0 byte .NSE file in the local event queue for the agent. On a typical physical workstation CPU usage for the aexnsagent.exe process will hold at 30% when this occurs. On a single core VM it will hold at >90%. With the new agent it will ignore/delete the 0 byte .NSE file correctly thereby eliminating any high CPU usage.
You can watch this occur by creating a simple empty TESTME.TXT file, rename it to TESTME.NSE and watch the agent attempt to process the file through the queue. If you add ANY kind of text to it, it will process the file and reject it as an invalid/improper format .NSE.
I do not know of any other changes that affect the agent directly.