Re: Flash update today not working.
Same issues as others. Most videos from other sources and even ads that precede YouTube videos were fine, but YouTube videos themselves had smurf people and other totally wrong colors. Flash settings would freeze the settings dialog box and all flash controls, so I could not uncheck hardware acceleration or do anything else with the video other than close the browser.
Not sure if 64-bit 11.10 still uses 32-bit flash with wrapper, but whatever it is from ubuntu-restricted-extras had just updated itself today along with some transitional package.
I used Synaptic to totally remove flashplugin-installer and something else related to flash and manually installed newest same version 64-bit flash using the four-square tar.gz file from Adobe. Still had smurfs after unchecking hardware acceleration until I closed Firefox and opened it again. Then YouTube videos looked fine.
PC is in my sig with nvidia DVI to HDMI connected 32" HDTV.
i5 650 3.2 GHz, 8 GB, nvidia GTX 550 Ti 32" 1080p | i7-4700, 8 GB, Intel HD 4600/nvidia GTX 765M 15.6" 1080p | etc.