Using the mobile version?
Which iPad are you using, and what version of iOS are you running? This information will aid us in recreating the issue so we can troubleshoot this better.
I was on iPad 2 with 5.0, I'm now on iPad 3 with OS 6.1.2 and it seems to be working. My Iphone 4 on OS 5.1.1 does not however.
Thanks for the information.