ifilm.com is having a conflict with Safari and QuickTime 7. But their solution is worse than the problem -- do not follow their advice! Basically, here's the problem. There are now two QuickTime plugins in Quicktime 7 in Library -> Internet Plugins. One is called "QuickTime Plugin.plugin" (a standard plugin for all browsers) and the other is "Quicktime Plugin.webplugin" (a WebKit plug-in for Safari).
It appears that the WebKit plugin does not work with ifilm.com, and so they are recommending that you delete "Quicktime Plugin.webplugin" and fall back on the old standard plugin. This is a terrible suggestion. Do not do this. If you delete the WebKit plugin, you will have many problems (e.g., Dashboard widgets that rely on it, such as Rabbit Radio, will no longer work because they rely on the WebKit plugin).
To temporarily get ifilm.com to work, just move the WebKit plugin into another folder (such as "Internet Plugins (disabled)") and relaunch Safari. When you need the WebKit plugin, move it back.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20050627204133570