Here's something strange going on with our permalinks settings. When set to default, everything is fine... Everything still seems to work fine with a custom/preset permalink setting, except for pages which have an image attachment in them. These pages seem to use the attachment template instead of the page template, and only show the attached image and none of the text.
This problem seems not to be related to the theme as it occurs even in the TwentyTen theme... Neither is it related to any plugins.
Here's an example of a page where this is occurring (pardon the shortlink): http://bit.ly/vOmlLF