Problems after move and restore

I have two problems that I’m wondering if they are inter-related. I’ve searched the archives, but I haven’t found much help.

This relates to: http://www.flywitheagles.org/newsupdates

What I’ve done:
1) I’m using 1and1 as my web host. I recently switched hosting plans with them, thus necessitating a move from one server to another (within 1and1).

2) The move seemed to go fine, no apparent glitches. But I didn’t check everything after the move. (ie I didn’t click every link, check every page, try to login, etc)

3) I attempted to upgrade from 2.1 to 2.1.2, but I got a fatal error. Not wanting to worrying about it today, I restored my database files and did a clean restore of my server files.

Now I have two problems:

1) If I attempt to login (as admin), I get a continual redirect. The PW and username are entered correctly, but I am not able to get to the admin page. I cannot get there by manually entering the wp-admin link either. Same problem

2) When I am at the main blog page, if I attempt to go to “next page” I get a 404 error saying that page 2 doesn’t exist. All other pages are there, and I can get to previous posts simply by looking at the archive months.

Any help would be wonderful. Thanks!