I fix Macintosh computers well. It's my primary mission, to get your Mac up and running as quickly as possible.

Some of the problems I fix:

Operating system crashes and freezes.
Software conflicts.
Directory corruption//disk fragmentation.
Macintosh viruses (if you use MacOS 9, they still pop up from time to time; there are very few viruses that affect MacOS X)
Networking and security issues, including network firewalls, wireless networks, networked printers, etc.
Hardware failure, including hard drive failure, bad RAM, video card failure,etc.