There have been updates recently for several games I have. The Market will download the games and start installing them, then I get a message saying that the update and installation was unsuccessful. I tried uninstalling both games completely and re-downloading them, but I get the same error. Space shouldn't be a problem as I have 150mb free. Anyone else have similar problems with these (or any other games/apps) updating? Sometimes I get a message that pops up and says, "Installation error 18 - unknown error." I have also tried turning on/off the phone, but that doesn't seem to help. The part that sucks about this is that I payed for these and now I can't play them at all. On top of that, I can install "new" games with now problem at all, but all of the ones with updates recently fail to install and update...even after removing them.