A little while later I went to open a program only to find that it was gone. I was distracted at the time but the update was definitely legit (or at least it was coming from an already installed app on my Laptop rather than from an online popup) and I allowed it to update while I carried on with what I was doing. A couple of days ago I had what I'm 99% sure was Java pop up from my task bar asking for an update while I was making some music. I'm hoping somebody on this forum can give me a sanity check.