Hi Shona775,
Welcome to the eForum
you've certainly posed an interesting question for your first post - and to be honest we're a little stumped on this
Have you tried uninstalling then reinstalling the software to see if this stops it?
Give this a go, see if it continues - if it does, is there any pattern to it? Do they arrive at a spcific time of day/certain day each week?
Give me a shout and we'll investigate further if reinstalling doesn't help
Paul
eForum Team