Can't view certain Chinese websites with Simsun.ttf installed on Ubuntu?

[ipsi()]

Ok, so I discovered a really bizzare issue:

I installed Simsun.ttf (from a Windows installation somewhere) onto my laptop, which was recently installed with Ubuntu. All seemed to work good. Required a bit of stuffing around with the font configuration files, but it worked.

Or it seemed to. When I went to visit 6park.com (http://6park.com, blocked in China I think, admins edit if it causes problems), I discovered that nothing was showing. None of the characters on that page would show. Well, almost none. A few did, and I'm not sure why.

I spent several days mulling over this, and I eventually decided that, since it had worked before, that I'd just uninstall the msttcorefonts package, and then the various Windows Chinese fonts that I'd installed. I'd also restored the config files to their defaults from another install of Ubuntu.

It worked! So I restored msttcorefonts, and it still worked. Restored the other fonts one-by-one, and *only* Simsun caused the problem.

It's not even mentioned in my font config files anymore, so I'm not sure why it's causing problems. It's been removed for now, but I'd like Simsun to be around to prevent issues if people send me Windows documents that use Simsun.

The only other issue is that I can't get Firefox to use Serif fonts for Chinese. But that's ok, it's all readable. EDIT: No, it's ok. Just some sites telling Firefox that they're going to use sans-serif.

[Battosai]

I have simsun.ttf installed (so my wife can use the Ali Wangwang client for her taobao) and have never had difficulties viewing sites in Firefox.

BUT your site is the only one I ever had problems with. Strange isn't it?