When entering a Facebook status update using Firefox -- and this occurs even in safe mode, ever since the introduction of the colored background code, there is a horrific lag, sometimes even holding onto initial letters (so that, i.e., "somewhat" might come out as "omeswhat").<p>Chrome does not have this problem, but Firefox does on two different systems. I'd like to just adblock whatever code handles this stupid color background stuff, if that's possible -- the fact that FB Purity can do it suggests it is.<p>I tried unzipping FB Purity's Firefox extension (XPIs are just ZIPs) and looking at the code, but I couldn't figure it out.<p>I know m.facebook.com could let me skip it, but that's not a fun interface to stay within.<p>Any thoughts?