I have been using variations of mozilla packages for about 7 years now with no problems. More recently I was using Sea Monkey. Last week the cursor movement became irratic particularly when the cursor is moved to the menu bar. The cursor rapidly scrolls left to right across the screen. In addition the text types backwards. I downloaded Firefox and the same happens. Ther are now problems with other programms such as notepad. I have sourced some old forums and tried the solutions without success. I have also tried updating Jave. My version is upto date. Selecting options in pull down menus are blocked, so could not download Internet explorer.