For the last couple of weeks , the I'm watching page has been behaving strangely, I am finding that some threads are "showing" twice- so it looks as if I am watching ( say) 12 threads but actually I am following 6. If I bump and reset or delete one copy of a thread, both threads are changed. However sometimes, when I reset a thread, a duplicate disappears but later the duplicate reappears. At the moment I appear to be watching 8 threads rather than 6.
Any idea what is going on? Its irritating rather than anything else.