The problem is in the plugin you are using. The plugin assigns a "z-index" of 1001 to the slideshow, giving it a "layer" placement above everything else on the site. You will need to either edit your plugin to remove the z-index, or contact the plugin author for instructions on how to disable that in the code. (You can also post a request to the "Hire-A-Coder" area on this site - The link in in my forum signature)
Your logo in the text widget is pushing the menu down & causing it to be misaligned. If you change the text widget to the following code, it should fix your alignment issue:
<img src="http://www.kumarmortgage.com/wordpress/wp-content/uploads/2012/05/MAC_logo_rectangle_RGB_highres-e1336099255455.jpg" alt="http://www.kumarmortgage.com" style="margin-bottom:-13px;">
That will give the image a negative bottom margin, allowing the rest of the header area to slide back up to where it belongs.