The thumbnails in my Slideshow Gallery won't appear. They are replaced with a broken image icon. The strange thing is, it happens for random photos. Whats more... when I right-click on a broken-image-icon, i can get url for the image. It turns out that those URLs are correct!
I've done all updates: current plugin, current timthumb, current wordpress.
BTW: what does it mean? (its a fix for htaccess, I've found on some blog)
<IfModule mod_security.c> SecFilterEngine Off SecFilterScanPOST Off </IfModule>