I've got a p2pool node running at xencoin.liquidbbs.org:24335 - but I no longer own any mining equipment to know for sure if it's working right.  Source is up on my git repo - the windows binary still needs re-compiled for XNC support.  If anyone else puts up a p2pool node, let me know so I can turn on persistence and the pools can work together (as intended).  The seed node is also still there on the same IP (default port of 4334) and I do my best to keep the DNS seed online as well --

The QT client on my repo hasn't been updated any.  The seed-node I run has to be reset every day because orphan transactions fill up the mempool and I am not mining blocks so they can be included.  It also has v2 block support in it (following litecoin code) but XNC went so long without updates that changes to the code have to be 'adopted over time' or it can have unpredictable results -- hence my mempool (since I'm the only one with a client that supports it) fills up with transactions that never get processed because I have no miners processing them and once there are 10000 in there, it starts having connection issues...

I just don't have the time I thought I would have on this and the other coin project - but I'll try to sort things out in the client I was updating so it's working right - I know another poster took the time to map checkpoints and build them into the old version client so I'm not trying to trump anyone else's work --

In the end, this coin has some inherent flaws - it gets tons of crosstalk from other 'copy and paste altcoins' because basic things in the source code to distinguish technically were not changed.  The block time is just too fast without a decent difficulty algo that prevents the mining from getting stuck due to bullshit like pool-hopping, etc. (or enough usage for the coin that miners will continually mine it and keep the hashing power up so).  Fighting things like that takes at least one fork, maybe two to correct and in the end, it will always still have cross-talk from the other coins due to it's source not being completely ported at origin...