i most certainly did have that problem in my corolla.. man.. it was terrible.. i sprayed glen20 and that fixed it for some time, then it would come back again a few months later... its weird though, coz it comes and goes, depending on certain conditions.. i put the air conditioning on in the supra the other day, to demist the windscreen... faaarrrkkkk it was wretched... i'll have to try the glen 20 remedy again and see what happens.. air conditioners suck like that..