It is already written up. The aircraft has been downgraded to CAT I for quite a while "due to autopilot history." A bit vague, huh?

Here's what happened to us:
Mid flight, both flight directors occasionally flash
during cruise flight, autopilot kicks itself off
Captain's CDI goes blank and stops receiving all information
Autopilot kicks off in the middle of Alts Cap
Autopilot kicks off in approach mode, speed bug jumps to 210 (which happened to be above redline) and f/o flight director flags.

These all were at different times. And this incorporates a few different systems.