This is a problem that has, or will plague all g5 accords at some point or another. My windows have been slow moving for years now, luckily for me it rains 90% of the time in Portland, so they dont go down much.
I've heard it has something to do with bad parts decision on Honda's end, but I dont think there is really much to do to solve it other than to replace the window motor.
I have noticed that with my windows, that they seem to go up unevenly, and if I put my finger on the top of the higher end and level it out by pushing down, it seems go to up easier.
Im sure that if you do a forum search, that you will find many more threads that deal with this same problem.
[scott]