I know EricJ2190 tried out the test network today-- Eric (and anybody else who might have compiled and run) you need to git pull, recompile, and nuke your ~/.bitcoinTEST directory. The client was generating blocks WAY too fast.
That'll teach me to go messing with code I don't really understand (on the bright side, I now know what the OpenSSL BN_bn2mpi() routine does).
Oh, and Eric: I added your pnSeed fix to my git branch.