[LarryMade]

Printer drivers seem to be the main one for me, I have a canon network inkjet all-in-one and a xerox 8560. The Canon I finally located the Linux network print and scan drivers finally on a UK or AU Canon site (which had an easy to fix glitch in the install file, Google around - you'll find them). For the 8560 had to get the Windows PPD from the Xerox site as the Linux drivers section was inaccessible and the pre-installed CUPS one didn't recognize paper handling. Still get a constant "printer is out of ink" warning - but it prints.

When it comes to laptops number one becomes the wireless card.

I usually avoid video issues by making sure the computer has an nvidia card or laptop has an nvidia chipset- learned my lesson there.