Hi Deano.
BT have a fair user cramping system in place, from 6pm to 12pm so you will
have trouble connecting at this time. Try D/L at another time of day.
Also Its not a good idear to use two P2P programs at the same time
Now update your java using this link, Vista nedds JRE 6 to work properly
Now! Go to,
START/Set Program Access/Change or Remove Programs,
now completely remove all versions of java.
Re BOOT Your computer NOW.

Now! Use this Link to get JRE 6, Use the off line installer, NOT the (recormended) one,
http://java.sun.com/javase/downloads/index.jsp
When Download is completed.
Disconnect from internet, close ALL apps n reinstall java.

If you need help, Shout, If it fixed your problem or not, Feedback helps others.
Peace.

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mickjapa108