most often the problem is the max connection / 5sec under aMule-tweaks setting
if this setting is to high, cheap routers like dlink for example will crash. never heard of your router but ok.
I would check taht if I where you, and back in the rc8 times, when you say it did not crash, thing is taht rc8 had a lot of buggy connections, which might have effected your router different
in the 2.0.0 and 2.0.1 those buggy connections are now fixed, which increases the network traffic, and becuase of this increased traffic your router might crash