You must be close to Aqua Yacht Harbor Marina, where I keep my boat. The fuel there contains no ethanol, but does have fuel stabilizers in it. Just fill up. Doesn't hurt to adc Sta-Bil, but no need since it's already in there.
I've experienced the same keystroke buffer issues. As suggested earlier in this thread, I just changed my settings. I see a noticeable difference using IE 11.
Interesting situation. This site runs vB 4.1.12. I operate a vB-powered site for the company that owns vB and have not seen this...