After some crashes of mail.app you will finally end in some items shown in only in the client app. Obviously, this happens only when using IMAP or Exchange accounts. However, the traditional solution was to remove the account and recreate them. Since the sync depends on the size of items to synchronize, I was frustrated [...]
Problem: Accidently, some friends of mine changed the display resolution of the Mac Book Air’s external display to an unsupported resolution. Everytime you close the lid, the screen went blank. Solution: Starting in safe mode (holding shift during startup) and third-party tools did not work. Therefore try the following: login without the external screen attached [...]
Best to use, open terminal.app, goto preferences, keyboard, select the proper key, copy the escape sequence from the following list, select “sent string to shell” and pase the escape sequence to the field. Key escape sequence in alphabetical order: End: \033[4~ Home: \033[1~ Page Down \033[6~ Page Up \033[5~