Click on just "Browse Articles" (NOTE: do not select the two choices underneath it) and it takes you to a page that says roughly:
PLoS ONE publishes new articles weekly. You can browse the journal contents by:
* By Publication Date - Browse articles by choosing a specific week or month of publication.
* By Subject - Browse articles published in a specific subject area.
Clicking on either "By Publication Date" or "By Subject" brings up a blank page (view source also shows it as completely blank). However if you select "By Publication Date" or "By Subject" from the "Browse Articles" menu, it works fine.
Also this is happening only in PLoS ONE context. CT context the same sequence of actions work.