We have a Windows SBS 2003 server and have been running Acronis TI on it for about 6 months. About a month ago I started to realize that our backups were taking a lot longer to complete for both the full and incremental backups. Last week I downloaded and installed the latest update and things were wonderful again. Then over the weekend we are back to VERY long backup times. I've looked at the logs and don't see any errors. There is a huge difference between when it appears to be working correctly and when it's not. When it finishes quickly it can finish in a couple of hours. When it takes a long time it can run for 8+ hours. There haven't been any huge changes to the data between updates. The only thing I have noticed that might cause a performance issue would be the backup drive should be defragmented, but that wouldn't explain a fast backup one day and a slow one the next. Any thoughts? I'd love help troubleshooting this.