Yup, my questions are getting less responses than before. I'm not sure why though. You still have LiveFeed and Recent Questions page and everything. I think it's because GAGers are still getting used to the new version and might be feeling a bit confused in the first few days. Maybe it's the new topics system. Who knows?
I too think questions are harder to find. Its not like it used to be where you clicked one of the few categories and questions just stayed there for everyone to easily see/find. Now questions can be put in multiple categories and if someone is only looking under "recent" your question isn't there for long.