If you save the game while holding down Shift (or whatever your walk key is), when you load the game you are slowed and unable to run/sprint/roll. It "fixes" by keeping your caps lock (or your toggle key) activated until you restart the game completely. Seems to suggest that holding down shift while saving makes the make think you got caps toggled and inverts the option.
If you don't want to restart, you need to activate caps lock, save the game, load it and disable caps lock during load.
You can toggle the walk/run with caps lock easily by just opening the Tab menu. Then set your caps lock and close it. E.g if you're in permanent walk and your caps lock is off, Tab -> caps lock -> Untab so the game now thinks Caps Lock on = walk, then Tab -> caps lock -> untab again to toggle it so caps lock off = run. Caps lock related actions tend to be iffy in most games, not just gamesas games.
Also: for "* In first person view - If you sheath your weapon (eg a bow) while in the middle a Stealth-Roll, your character will stop mid roll and be unable to move again, but your stamina drains constantly. Switching over to 3rd person view or drawing your weapon again fixes this." (I reported this one) - I've been doing some testing.
More specific details include - This tends to occur more frequently while going up/down an incline (e.g mountain climbing or slope climbing), and occurs more frequently if I'm switching weapons (say, from daggers to bow) or use an Aura Whisper in mid-roll than simply sheathing/unsheathing..
For the "Under Saarthal" Amulet Wall bug, I can confirm that using FUS RO (level 2) Unrelenting Force can break the wall safely and without crashing.
New Bugs for the list:
If you take a bounty for a dragon at a location you've cleared previously, there's a good chance the dragon will not have a soul for you to absorb. Some research online has thrown up the possibility that the dragon re-spawned at this location was assigned the same ID as the previously killed dragon, hence the 'dragon soul absorbed' flag has already been set for it.
Mages who cast wards and/or protective spells, if killed (by stealth archery at least), continue to emit the sound of their wards/protective spells (a constant fiery hissing) even when very very dead.
On an NVidia GTX 560 Ti (not sure about other systems) w/ the latest drivers, on Ultra settings, sometimes the particle effects system will bug out and stop rendering fire (with or without FXAA), spider webs, and the whole world map goes blurry (similar to some bugs other experience by default). This is fixable by restarting the game - likely cause is alt-tabbing out frequently or into specific applications as it almost never happens if I don't alt+tab during the session.