I had the same problem and saw an ENT doctor about it. She did confirm that people occasionally do have voice problems with advair. I had been on it for many years and never had a real problem, and for some reason in the past 6 months had a problem. The doctor switched me to a new inhaler, asmanex and I have been back to normal. The only downside has been that my insurance does not give me a discount on the new inhaler so it is quite a bit more costly, but at least my voice is normal!

Hope this helps!