I have been using IE 5.5 xxx for 2 years - no probs, recently I had problems accessing a site because the JIT compiler radio butt. was clicked in Advanced, when I went to change it - it had gone, (the tab that is!). tabs finish at Program. I have downloaded IE 6 SP 1 and installed in an attempt to rectify - didn't work. I have downloaded latest ME updates - didn't work. In the registry, everything appears to be set up OK, and I have tried both repairing and re installing IE 6 - nothing doing. - Any ideas?