A number of members have been concerned about blank screens when trying to view client statements online. This is particularly crucial in the absence of copy statements this year, so patience is running a little thin.
HMRC have this logged as a service issues problem. It is generally due to the security settings on browsers.
To save everyone ringing the online services helpdesk, HMRC has put together a page of suggested IT solutions for you to try. If none of these work, the guys at the online helpdesk seem to be able to sort it out.