I could not find this problem posted before, so here goes. I have E-mail notification off, but have a bookmark to take me directly to my User CP. Initially, there might be 10 threads, that I have posted in, listed as updated since my last visit. The problem occurs when I click on a thread, read it, and return. Likely as not 7 or 8 of the threads listed originally will have disappeared. I've tried it top to bottom, and bottom to top. Same result. Odd, wouldn't you say??