Maybe I'm crazy but I really feel like the columns have changed size. I'm referring specifically to the Forum and Last post columns.
This is what the main page looks like with "normal" column widths:
This is what the OT forum looks like. I'm pretty sure the column for Last Post for Food and Entertainment used to be wider so I could read more of the thread title. In this picture it shows "Star Trek New Series". I feel like more of the thread title preview was available in that column. For example the Last Post column for the Sponsored forums look wider to me, especially the ones on the left for Real Estate, Gem and Prop Mgmt.