I don't know if it's a related issue, but now I am having massive problems downloading over the PIA proxy. It might take 50-100 attempts to start a download. It keeps saying "Server error 404," cycling through five links with a 5 minute wait on each. Then after a seemingly random number of attempts, the proxy gets a thumbs down in the settings and I have to reset that. All though this, the direct connection starts on the first try and continues to download.

I've also found that instead of re-entering the password, I can reset the proxy connection by unchecking it and checking it again in the settings.