Using the latest OS X and some weird things are happening in the last couple of days. One of them is that I can't add attachments to any email message whereas 3 days ago it was fine. Some programs crash as soon as I start them. Some install codecs seem to be missing so programs I've downloaded (from the manufacturers) won't open. Its probably all related. Does anyone know what to check? I've repaired permissions from the OS X DVD. And I just did an erase and install recently.