Orkut has changed their design recently…

But,you have a widescreen monitor and orkut’s new design doesn’t look good on it.what you want to have is this

here is the solution for your problem .Just follow these steps one by one :

Install greasemonkey extension for firefox if you have not already done so.
Go to http://userscripts.org/scripts/show/11782 and click on the “Install this Script” link on the right side

Thats it …now browse orkut.com and whole content should be resized to 99% of your screeen automatically.
for those of you who want to look at the script …