First off, I am posting this from another computer. The problem with my other computer is that when I try opening certain applications on my computer, they bounce once (on the dock) and nothing opens at all. This only happens to SOME applications such as: Safari, Mail, Adobe Reader, iTunes, World of Warcraft, and the Software Updater. There is not a problem with the dock because when I try clicking anything that will automatically direct to one of the applications that aren't working (such as a link to a website), no matter what folder they are on my computer will not work. I have tried restarting my computer multiple times and have also tried repairing disc permissions in Disc Utility. Any other application works (iPhoto, iMovie, Word, PowerPoint, Excel, etc.), it is just these six that do not. Any help would be greatly appreciated. Thank you.