As previously posted, the new version of WebTrends 8.1 was a bit buggy. So 4 weeks later, WebTrends has now released the first round of patches with version 8.1a.
I'm in the process of upgrading my test server and the upgrade is slow. Just like during the original upgrade, it looks like the upgrade is hanging giving a message for more then 30 minutes "Time remaing: 13 seconds". I learned my lesson last time and did kill the process.
I also did a brand new clean install today on a production server at a client. It went smooth until I went back to modify the configuration to change the UI port from the default of 7099 to port 80. After 30 minutes, WebTrends was still displaying the message "Shutting Down WTUI". It was a little after 5:00 pm, so I left it and am keeping my fingers crossed that it will be resolved by tomorrow morning.
So until I see the impact from tonights upgrade, I still can't recommend the WebTrends upgrade. However if your installing from scratch, go for it and download the latest version WebTrends 8.1a at ftp://ftp.webtrends.com/WRC/81a/wt-windows.exe