The big red "Disconnected!" icon is present and the program refuses to scan. However, it can successfully check for new versions of the software as well as display community information (connections to me, but I do not see anything saying "X number of people are connected to the cloud").
The only network related activity that is not working in the program is scan-related activities.
Avast 5.0's firewall entries for Immunet are set to "allow all". Additionally, I have manually added every *.exe file from Immunet's directories and I have set them to "allow all". The only exception, of course, is anything that may have been in the Quarantine directories. I didn't bother to open that folder for obvious reasons...
In addition to this I also set Avast's firewall to "ask" whenever a network connection attempt is made.
After changing the firewall's settings I closed Immunet, waited a moment, and then re-opened it. It should now be able to access the Internet correctly, but the big red "Disconnected" notice will not go away and the program will not scan.
Lastly, I checked Windows Firewall for any entries related to Immunet, even though Windows Firewall should not be an issue.
It seems to me that Immunet is having some network issues or such.