Thanks for the reply Graham.
Could be something like that that doubled it up. It seems to be working fine now.
I have now also removed old versions on the operating system so now have 2.78 GB free space.
Nick Gardener also replied on uk.sci.weather.
I am now trying to find a way that I can automatically upload the png files to my website the the BL system produces that show daily, monthly and yearly graphs, but this maybe a bit beyond me.
Many thanks
Keith (Southend)