Hey, first time poster here. I'm having a few problems with my MacBook Pro: a.) Every so often the "Text highlighting" command [Hold+Drag mouse across text] seems to go haywire and refuses to turn off. b.) I also seem to get occasional selection box problems, with selection boxes displaying the same behaviour. Could this be a mechanical problem with the mousepad? It isn't consistent and only started happening in the last few days. c.) The software update program doesn't seem able to find the updates. For example, Pages will tell me there is an update to download, but software updater can't find the update. This has happened for long periods of time over the last year or so, but seems to sort itself out after 3 months or so. Is there a file I can delete or fix to sort this out? I'm not sure which updates I haven't received. I've already deleted "library/preferences/com.apple.softwareupdate" Can I please have some help?