If you are asked to login whenever you try to search or view the New Posts page it it likely you have an outdated cookie (with respect to the search server, but the cookie is ok with our main db server so you only have problems with searching). This should solve your problem:

1) Click the 'Log Out' link in the upper right navigation, three links to the right of the 'New Posts' link.

2) Log back in.

3) You should now have no problems when clicking the 'New Posts' link or searching now.