Ethernet Sockets Locking up

Hi all, I've just come back to the Arduino after a few years doing other things. Can some one tell me please if the problem of the ethernet sockets on the W5110/shield/library code getting locked up if not released properly has been fixed in the latest version of the library that comes with the IDE.

I doubt any 'fix' has been made: I think the issue is that each socket consumes RAM and if you don't release it after use you will use it all up and cause failures when you try to open new ones.