[Plugin: NextGEN Gallery] Problems with thumbnails

Hi !

I have the thumbnails size in 150×200 but when I put the gallery [gallery=7] it show me very small thumbnails (in chrome explorer) or none thumbnails (in firefox) only in Iexplorer it show me fine…

I recreate the thumbnails a lot of times and nothing, I check the thumbnails files and is in the correct size, only its not showing correct…

http://www.elarsenal.com/gallery/

check by yourself and tell me what you see. If you know how to fix it, please help me (oh, and yes, I clear the cache a lot of times xD)