IBM Announce that they will no longer supporting IBM AIX 5.3 Operating System from 1st April 2012!!
For those customers that are using this version of operating system software could come as a bit of a shock especially if you are unable to upgrade a supported version AIX 6.1.
IBM Extended Support Agreement could be a saving grace as they will help support your AIX 5.3 Operating System until you are ready to upgrade to a supported version but this does come at a price. In my experience I have seen prices for Extended Support three times the value of Software Maintenance!!
In my opinion customers should look at the cost of having extended support over peace of mind.