Trying to update apps - insufficient storage message.

Hi all.

Having a bit of an issue, I am unable to update apps I keep getting the message Insufficient storage available and Im not sure it is connected but I am also having iissues with the data connection..

The phone is a standard non rooted N7000 running 4.1.2

Device memory 1.97GB
Apps 475mb
Available 207

And theres not that many apps installed and no games. I am not very technically minded when it comes to these things which is why its not rooted, I prefer things with nuts and bolts..

Any advice in the simplest terms would be most appreciated.

Thanks

Dave