Setting up your computer before you go to bed to download a demo for a game that's... 20 MB large! Waking up in the morning to inevitably discover the download failed part way through.
Getright was my choice for years, until it decided to scrap an entire 600MB iso I had downloaded over 56k, and start over. Getright pissing me off was thebmain reason why I got pretty good at perl 25 years ago - I decided to write my own download manager.
sometimes I still have to do this, sure not for something that's only 20mb but a 1gb file can take a whole night to download in my uni accommodation. The landlord doesn't seem to give a shit though because they're still advertising that the building has "up to 100mb/s" wifi speeds.