It's not too big of a deal in general, but also because it doesn't happen that often, so this is just more out of curiosity. Lately, sometimes when opening Firefox, my first homepage tab just opens as New Tab -- in this case, YouTube. Other homepage tabs, in order, are Facebook, KH-Vids, XenForo Community, and SEGA Forum. Edit: This doesn't appear to be an issue anymore and only lasted a short while.