I have emailed them to ask what is causing the problems. I wondered if it was just me suffering at the moment but clearly with the number of posts on here something is up.

It should be simple. If they are prepared to offer their servcies to other companies ie CD-Wow then they must increase staff and increase stock likewise so as to leave their service still running as good as before. If they cant manage that then they have bitten of more than they can chew and and will suffer along with many of us accordingly.