Debian Wheezy 7.4 here:

$ ./bitcoind
bitcoind: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.14' not found (required by bitcoind)

Wheezy uses 2.13 ==> https://packages.debian.org/wheezy/libc6

So I'll have to stick with 0.8.6 for the time being. I trust I'm not hurting the network if I do that, right?