People having trouble getting work units:
Make sure you have set your client to recieve work units larger than 10MB.
This is the option if you use the System Tray Client:
If you use the console client, you need to go through the configuration again and change it when it asks you.
If you don't have it set to recieve WU's larger than 10MB, the work available to you will be very limitted, especially with GPU folding, as most of the GPU WU's are now larger than 10MB.