My apologies if this has been addressed but I couldn't find it in the DEV Bug Reports. I also didn't see this in the Sticky topic of bug fixes for 3.4.
On a member's profile, if I click the link that says "View all unarchived posts for this member" (or something like that) it brings up the search.asp page with a full page of posts. When I go to page 2 of x, there are no posts.
are you seeing that here on this site, or on your own site as well? If it's only on this site, then it's because the search.asp page is not the same on this site as is in v3.4
I'm seeing this on this site (forum.snitz.com/forum/search.asp). It's sad to say but I don't have enough posts for one person on my site to spill over to another page.
I would encourage others to check their own installation of 3.4 to verify or nullify this potential bug.