Resource leak after 150 days uptime?

I'm using Media SDK 2014 R2 to do hardware accelerated decoding and encoding.

I'm trying to track down a suspected resource leak that is causing our systems to hang after 150 days of uptime.

I am hoping it has been fixed in subsequent versions of the SDK but I am unable to locate release notes for anything but the most recent version.

Are there older version SDK release notes available somewhere?

Also, Is anyone aware of long-term resource leaks that exist in the 2014 R2 SDK?