OK, so it looks like my copy is taking up an usually large amount of CPU. (And, yes, it is "Enhanced CTorrent," but the executable produced by the Makefile is named just "ctorrent".)
When I say I'm using "the native tool chain," I mean I did nothing more than
apt-get install g++
gcc --version reports
gcc (GCC) 4.1.2 20061115 (prerelease) (Debian 4.1.1-21)
The config.log file says target = arm-linux-gnu -- is that what it should be? (I've seen mention of arm-none-linux-gnueabi here and there, but haven't been able to make much sense of the toolchain discussions.)
I know there's some floating point in this program, but I can't really imagine there's enough to have much effect. How could I tell whether my executable is being compiled for hard float or soft float?