Since writing my last post I was mailed an upgrade to the latest version.
This is a totally new interface and much simpler and better all round. I have had no software clashes and the only problem that I have had is that it will not allow me to log on to Bugzilla supplied through someone elses web space, but no problem.
If you want to view pictures at high quality in browsing then by the time that you get them you have not saved that much time, but otherwise it can speed things up a little.
Is it worth £25 per year? ...............hmmmm, the jury's out!