So earlier yesterday, I popped into SL Viewer (latest), and headed over to a cam sim to shop at Blueberry. It was packed and took a long time to load graphics / items / avatars. Graphics were loading in weird places - like avatar skins were loading on prims, avatar profile pictures were loading on vendors... I cleared the cache and rebooted my laptop and it cleared up. I didn't think much of it; I shopped and left. However, ever since, any time I log into SL, I'm getting weird issues with textures refusing to load. Instead of being jumbled and out of place, I'm getting this weird pixilated replacement thing. It's on random prims, and it's happening every time I log into SL now.
I've checked my graphics card; the driver is updated.
My graphics view on SL is set to "MID"... what else do I need to do?
Edited to add: I uninstalled and reinstalled SL viewer. No improvement. I tried Firestorm and it's not doing it in that browser.