Facebook comments display issue.

Hello, I have a rather annoying problem.. When someone comments on one of my statuses or photos, I do get the notification that someone commented, but when I click on it, my friend's comment does not display... Today, I found myself with 10 notification comments from yesterday that I couldn't see at the time they were written! It suddenly started yesterday, and I’ve tried changing browsers, but nothing works.. Thank you in advance for your responses.

Configuration: Windows XP / Safari 535.7