Please stop telling me there are two seconds left.

A loading bar reaches 99%, sits there, and suddenly those two seconds have lasted a minute. I was fine waiting before the little number started making promises.

I do get why it happens. A program may know how many files it has copied without knowing exactly how long the next bit will take. The estimate can be wrong without anyone trying to trick me. Still, showing a precise countdown makes the guess feel much more certain than it is.

I'd rather see what it's doing: saving files, checking the download, waiting for a response. If it can't tell me that, a spinning circle is okay. Just show me it's still working.

I can live with “not sure yet.” It's the repeated “nearly done” that gets annoying.