Text Margin Error.. please fix it :-D

[arcademint.com]

Hello everyone,

its my website : http://www.arcademint.com

and in the homepage..i have some thumbnails and Texts beside of that.. (links near to thumbnails..)

its look fine..

 

but..when i refresh the few times page & the links which have small titles are Braking the Designs..

i just attached the picture here.. (error is red outlined)

http://img138.imageshack.us/img138/2760/error1xk1.jpg

 

please see that so you can understand.

 

i know its a simple fix..but..i don't know..where the error is..

 

Thanks in advance.