Received this reply from Lovefilm after complaining of buffering problems;
Thank you for your email regarding the LOVEFiLM Instant on Wii.
Please accept our apologies for any inconvenience caused.
I'm afraid I must advise you that currently we are facing a technical
problem whilst customers trying to stream via Wii, this is a known issue
and we are working on it.
• If this happens for the very first time, you can select the
‘Retry’ button or ‘Cancel’ to go back to the product page.
• If you select ‘Retry’, the video player will restart itself.
• When this happens you could see the buffering icon for up to 20
seconds before playback starts again.
• If this happens again you can only ‘Cancel’, and then restart
playback from the product page.