Update links manually
Illustrator is constantly reading linked files, checking for changes. This is normally not a problem, but when the network is slow for any reason (like if you're working remotely over VPN) AI becomes unusable. Simple text changes become an ordeal as every time you switch tools or click anywhere, you have to wait for a minute or two as the links do... whatever they're doing. A simple panel-level option to turn off automatic link updates would make working remotely (which some say is the way of the future) much less painful.
Jim Teal commented
It just took me 20 minutes to change a copyright line and a date.