As soon as I enter master server credentials to connect, Openxenmanager site freezes showing Synchronization dialogue box.
Eventually, I had to kill it and none of the buttons work. I am running Ubuntu 11.10 and below is the log I get for openxenmanager:
File "/usr/lib/python2.7/xmlrpclib.py", line 1294, in single_request
response = h.getresponse(buffering=True)
File "/usr/lib/python2.7/httplib.py", line 1015, in getresponse