Yesterday I made some updates on my 6.5 pool.
I followed the link bellow
And installed SP1027, SP1045, SP1048, SP1055. SP1060 and SP1061
A whole lot of them..
I haven't been restarting after each hotfix. I decided to do a restart after applying the last hotfix.
I first restarted the slave and not the master, but when the slave started I got the following message and since then it cannot be added to the pool nor I can ping it:
"The underlying Xen API xapi is not running. This console will have reduced functionality. Would you like to attempt to restart the xapi?".
Which I am doing but with no luck.