Not just adverts though
It's not just the adverts that are too loud, something should be done about the relative volume of special effects or music compared to the dialogue.
In some programs the conversations are so quiet that you have to turn the volume up to hear what's being said then for an action sequence to cut in and blast your eardurms whilst you scramble for the remote to turn the volume down.
Adverts are a breeze compared to the programs as you know when they are coming and can be ready with the mute button.