I complained about this in the "Mudcat acting differently in Firefox" thread on 23rd June, but it only happens on the iPad:

The bookmark would bring up Mudcat as per normal, then after a few seconds would shift to a page full of Chinese text (no pictures, just a cartoon-y logo of some sort). I didn't click on anything but did reload numerous times, after having switched off and then back on and re-typed the address manually - but it kept doing it. It's like the URL (which was the normal one and didn't change) had been hijacked. But only on the iPad. Weird.

It meant that I haven't been able to access Mudcat AT ALL on the iPad, in any browser, and it was still doing this as of two or three days ago. I just checked it again now, and things seem to be back to normal, fingers crossed. I never did anything to try to fix it, because I had no idea what to do, and it wasn't happening on any of my laptops (64-bit Windows 7, Mac, and my itsy-bitsy-teenie-weenie "computerette" as JiK calls netbooks, also Windows 7 but the simple-minded edition).