I don't believe their claims. The newer avrdude works just fine for me.
I do not use the stock version either... But I have a virgin installation on another PC just for sanity testing...
We more advanced forum members must realize that a noob/newbee/joekool might just do the upgrade because they think they must have the latest-greatest. Such actions could go terribly wrong if any of the arduino-centric code breaks. Users look to the forum for support, we never ask about environment changes and tool versions.
In the context of this post, everyone seems to know the framework. I just wanted to point out:
DO NOT UPGRADE TOOLS UNDERNEATH THE ARDUINO PROGRAM DIRECTORY IF YOU EXPECT FORUM SUPPORT SERVICES
It is difficult walking folks through Arduino code issues without introducing compiler-linking -version concerns. At least for me.