Hello...
I am was in the same boat with you all.. after 5 months on Actos I gained 35 lbs. I tried dieting, but that didn't work. I tried exercise, but my hands and feet became so swollen after a 30 minute walk, that I just gave up.
My Dr. put me on 2000 Mgs of Metformin and so far my weight has been dropping steadily and my cycles started right up. Funny but I might even be pregnant!
Good luck with Actos, but if your swelling up.. I suggest changing medication..
Not to sure about Avandia, I never tried it...