I have seen several entries on this bbs that mention that you hold your nose and blow to relieve ear pressure.
Please, PLEASE, use extreme caution when doing this. You can literally blow a hole into your eardrum when doing this. If you feel you must blow, then do it gently and slowly to alleviate the pressure. Don't blow forcefully.
I had a hold in my eardrum from when I was a child and had terrible chronic ear infections. I could force air out of the hole in my eardrum. I have since had it repaired (with surgery), but still experience problems.