SimonD & animate,
If your firewall icon's coming & going it may be a software firewall or an internal firewall within a modem/router. Can you both answer the questions in the link below (sorry for any repeats)?
System details - help us to help you

animate,
Try using your computer's search to look for some of the missing file names. Unless you've deleted them from the LW library by mistake, they should be around somewhere:wink: