I have literally thousands of dynamic pages that are not getting indexed as often as they once were. Google is also not picking up the newer pages as quickly. This seems to be apparent both on sites I've had for a long time as well as new sites. It's especially apparent with new sites. The index page got added to google within a day or two, but the internal pages are still left untouched after 2-3 weeks. This is not limited to new sites though. I have an older site where I changed the page titles and revamped all the content and they have not been idexed for more than 4 weeks.
Is Google getting slow at finding internal pages?
Would it help to submit some of them using the 'add url' page?