THE first time I brake in my 2002 Holden Astra convertible there's a squeal, but after that its fine. I've checked the brake pads many times and they are OK. Have you heard about this problem?
The first time you brake the pads are cold. After that they have some heat in them and there is no problem. It's possibly a material issue, but it could be fixed by chamfering the leading edge of the pads. Contact Howard Reynolds of Race Brakes (ph: 9687 7222) for help.