[Jan 28 16:41:41.292284 2011] debug: Link denied (No matching link configuration) [@127.0.0.1.58651]
[Jan 28 16:41:41.292313 2011] Error: Your IRCD's link block may not be setup correctly, please check unrealircd.conf
[Jan 28 16:41:41.292474 2011] debug: Received: ERROR :Closing Link: [127.0.0.1] (Link denied (No matching link configuration))
[Jan 28 16:41:41.292503 2011] debug: Closing Link: [127.0.0.1] (Link denied (No matching link configuration))
[Jan 28 16:41:41.292526 2011] Error: Your IRCD's link block may not be setup correctly, please check unrealircd.conf
Just a guess but I'd bet your link block isn't correct (the cached copy, not the hard copy).
Here's what I'd do, add an oper block for your self since you don't have one and thus can't see errors on IRC. Then in shell cd to the unreal directory you installed to and type: ./unreal rehash then on IRC oper up (use the /oper command) and try connecting services again, my guess is it'll work then.