I have been using Office 365/Skydrive for months and loved it. On my desktop (windows 7), I access my skydrive files through Windows Explorer and edit directly in the software (word, excel, powerpoint). Suddenly it has become very slow and non-responsive. Any time I move the mouse or type, I get the green spinner and the message at the top says Word (not responding). It's impossible to work.

I tried signing in to skydrive online and editing the files that way, which results in a similar problem although not as consistently. Sometimes Word takes up to 30 seconds to open while it says "processing" and I have the same problems with it not responding.

I removed office 365 and re-installed but this didn't change anything.

If I access skydrive online from my Windows 7 laptop, I can edit in word or excel without any of these issues, so it's something on my desktop that is causing the problem all of the sudden.