We are reportedly getting dinged by Google for having a lot of duplicate content on our sites. Many of the pages reported as having duplicate content look like the following.

http://www.ourdomain.com/c-48-thisca...e=12&pagenum=2
http://www.ourdomain.com/c-48-thisca...e=12&pagenum=1
http://www.ourdomain.com/c-48-thisca...e=12&pagenum=3
http://www.ourdomain.com/c-48-thiscategory.aspx

Obviously, this is a category page with four pages of items.

We're getting dinged for duplicate H1 tags, duplicate title tags, duplicate meta descriptions etc.

Is anyone else seeing things like this? Is there any way to fix it?

Thanks,
Tom