I am doing quite nicely with barre chords. They are sounding okay and I can change chords reasonably quickly. The one problem I am having is that I cannot play them for very long at all without my fingers aching and I have to stop. For example I can never play for the whole of the practice tracks in Guitar Fundamentals 2.

I know these things can take time but it is now been well over a month and does not seem to be getting any better. Does anyone have any tips to improve the strength in my hands or will I just have to be patient. I have had problems like this before and time and practice normally seems to work. But this is getting a little frustrating.