hi tailsyboy...
- repairing permissions is always a good "first step" if things are acting weird, error messages come up. Permissions basically identify to the operating system what parts are allowed to interact with other parts, who can control them being changed etc. Updates can often screw these up so running Permissions Repair is always a decent plan after an update. To do this:
Open Disk Utitlity (Applications > Utilities, or start to type 'disk... ' into spot light and it will pop up (upper right of menu bar magnifying glass icon)
Next, select the drive on the left hand side that you want to repair. If you've subdivided your drives (partitioned) then you can repair each one.
Once you've selected the drive (it has to be an operating system, you can't repair permissions on a drive you just use for files/storage etc.) click "Repair Permissions" (there's no need to "Verify" them as this only tells you if they are fubarred and then you have to run Repair Permissions anyways. It can take 5-10 minutes sometimes. it's a good idea to run it twice to ensure all has been repaired if you have a long list of repaired permissions - However NOTE: some elements in Leopard/Snow Leopard report being incorrect but do not repair (it's a strange, but correct report) like FrontRow etc.
cheers.