I have a mystifying and irritating issue. In certain text entry boxes on various websites, my PC has taken to typing '=' (equals signs) repeatedly, at the same speed the cursor blinks.
Now, this doesn't happen in all text boxes else this post would be riddled with them. That also shows that it is not a keyboard issue (the key is NOT stuck down!). Examples are the eBay search box and the Alliance and Leicester password entry boxes. Google is apparently unaffected.
It is not browser specific either - I have the same problem in Chrome, Firefox and IE. I haven't noticed the issue in any non-web applications.
I'm normally reasonably good at diagnosing this sort of thing, but this has me stumped.