Don't think I can fix this for you just yet, so just comments initially:
Yes, it clearly was used as an MD at some point from the IP address. The core's DHCP server recognises the MAC address and so handed out the same IP.... is this a problem? I wouldn't have thought so, maybe Zaerc can comment on that.. I have got something at the back of my mind ringing bells.... perhaps you should delete the MD and you will probably have to remove the reservation and MAC address from the DHCP config file as well. Get it back into the right range.
It can't connect to anything because it can't resolve names. Now try:
ping 101.1.0.53 and 54 and try tracert'ing them as well - you have to have access to your DNS servers.
The other thing is, your node type is mixed, this is extremely unusual - it should be hybrid. But this only effects NetBIOS name resolution, so I don't think that could be it...
Start with the ping and tracert to your DNS servers from that machine and from the others... if you fix that, it should fix the problem...