After the upgrade to 1.9g certain game cube games like NHL06 can't seem to load or save with memory card while Naruto: Gekitou Ninja Taisen! 4 will get random mute that has to be hard reset to get sound back. Let me know if you have similar problems with the same game or different games. For now GCOS is the quick fix, but I rather have it proper fix by the next firmware.
