Decided to bite the bullet and completely reinstall raspian from NOOBs.
Once complete tried raspicam again but still connection failed.
Noticed something odd on my Samsung Galaxy Tab2 as google play said i did not have the raspicam app installed even though i had an icon and could start it up.
So i powered off the tablet completely (first time in about 6 months) and back on. At this point all trace of raspicam remote was gone.
Installed it from google play fine and started it up. still connection failed.
Checked the pi, camera is installed and i can run raspitill to generate and image.
Then i remembered i had loaded the raspicam remote software on my samsung galaxy fame mobile phone and this had been working last week.
Tried to connect up with that but got the same connection failed.
Sorry this is a bit long - have you tried connecting using any Samsung device since your update at the weekend?