Since doing a full uninstall of 7.03 and installing BESR8 clean I have experienced:
Manager stalls, had to reinstall the manager on the agent to re-establish contact. Seems worse on Vista but has happened on Server 2003 as well.
Backups stall while in progress. I have one stalled now waiting and hoping maybe it will finish. It gets to the end of the file and sits, the progress bar is spotty, it will report 5%, 10%......45%......90% and stall. I've had it stall at 10% while the image grew to the full 39GB and never finish. I also had the progress bar not start at all and a backup ran to completion.
Licensing is flakey. I installed the key using the manager but the agent did not recognize that it was licensed. I finally uninstalled and reinstalled BESR8 on that server because I refused to type the key in on the agent. On the second attempt it did register the key properly.
I also had a problem with "fix it" and assigning jobs to backups. I would click on fix it and it would want me to assign a job to the computer as if it was unassigned. When I tried to assign the job it would tell me it was already assigned. I had to use the Backup Now selection.
Backups are taking significantly longer than they did in v7.03. The server that is stalling took 3 hours to reach the full image size on the backup destination, v7.03 was completing the backup in about 1.5 to 2 hours.
Overall... a flop. Upgrading has not been worthwhile. I've yet to test the Exchange Retrieve nor do I know if it will maintain the correct number of backup sets for my 64bit SQL servers.
The interface is not different, I see no major improvements and I'm still loosing contact with the managers. In fact, things seem worse.
If you are running OK enough with 7.03 I'd tell you to stay there. If you are spending money to go from 7 to 8... IMHO you won't be happy.
/RB