It does not happen regularly, or in the same part of the game, or at any specific graphic card temperature.
My drivers are up to date, my card never goes above 70c and I have done thorough and extensive burn in tests to ensure that i'm not having any hardware issues, such as ram, etc..
heres a video catching a similar issue but not exactly the same. Same speed of flash, maybe faster, and always a game texture, never odd characters and white. Keep in mind, I am the KingOfTaurus on youtube too.
Just watch it. I'm not the only one and I couldn't find any blue response on this. It would be nice to at least get a confirmation that it exists.
Another note, I NEVER get graphical glitches on ANY other game. ONLY Diablo III.
AND it seems to happen more often during "lag" like issues. Hard drive loading or what not.