Purple Line
 

Not sure why, there is thin purple line below the header of my forums when viewed in iPhone or iPad (any browser like Opera, Safari, Mercury). I do not replicate this in Windows Firefox or Chrome otherwise.

Would appreciate help on this.

Not sure where you are talking about. But, look at it using firebug and look for a border associated with a table or table row or table cell.

I cannot use firebug because the problem shows up only in ipad/mobile browsers.

Then use Inspect Element in Safari.