I have my jira server set up on a host at 10.0.2.16, port 9090
on the machine I am hitting the server from, I have a hosts entry
10.0.2.16 dev

when I hit the url:
http://dev:9090

I get the following stack trace in the log:
2009-09-22 09:25:45,760 http-9090-Processor10 ERROR kem 33945x216x1 1udt2o0 http://dev:9090/secure/Dashboard.jspa [renderer.internal.http.HttpClientFetcher] Unable to retrieve response
java.net.UnknownHostException: dev
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:177)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:367)
at java.net.Socket.connect(Socket.java:524)
at org.apache.http.conn.scheme.PlainSocketFactory.connectSocket(PlainSocketFactory.java:123)
at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:123)
at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:147)
at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:101)
at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:381)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:641)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:576)
at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:554)
at com.atlassian.gadgets.renderer.internal.http.HttpClientFetcher.fetch(HttpClientFetcher.java:91)
at org.apache.shindig.gadgets.DefaultGadgetSpecFactory.fetchObjectAndCache(DefaultGadgetSpecFactory.java:124)
at org.apache.shindig.gadgets.DefaultGadgetSpecFactory.getGadgetSpec(DefaultGadgetSpecFactory.java:89)
at org.apache.shindig.gadgets.DefaultGadgetSpecFactory.getGadgetSpec(DefaultGadgetSpecFactory.java:72)

and the dashboards all have the following error:
Error loading gadget: org.apache.shindig.gadgets.GadgetException: Unable to retrieve gadget xml. HTTP error 500

if I hit the url:
http://10.0.2.16:9090

everything works properly

attached are log files – I shutdown the server, deleted the log files, started it up, hit http://dev:9090, then shut the server back down, copied all the log files into the tar