I also have had a panel freeze, during FMC interaction, typing is possible but nothing is displayed in the scratchpad. The menu buttons work just fine I can switch between all pages. The scratchpad gives the message "INVALID ENTRY" which I can't delete. Happened during route modifying. Strange thing is throttles don't work anymore but F1-F4 does work all other inputs are unresponsive. MCP seems to work, can dail in speed, heading, alt. EFIS panel works and also updates the display (range, WPT, ARPT and so on) although the aircraft is flying the position remains fixed on the display (was skidding along the ground somewhere over Rotterdam while the display still said I was above Schiphol. Then after a few minutes all my frustrated MCP input appears on the scratchpad but again can't be deleted. There I ended the flight.
I also installed AIRAC 1107 but that was where I got the freeze with... Regards, Edwin Osterloh