Hmm... the linux binary doesn't work. Says "./chncoin-qt: error while loading shared libraries: libminiupnpc.so.9: cannot open shared object file: No such file or directory" when I try to run it.
I've been also getting high number of rejects now (over 20%). First I thought it was because I was downloading with full bandwidth and it went down when I disabled the download, but now I'm getting them again without any bandwidth use. I'm mining with two computers and having the same with both.