Running BESR 7.0. A full backup of my 170GB Vista hard drive, to a USB drive, takes an estimated 30+ hours (don't know how long exactly, my PC is never in the same place for 30+ hours so it doesn't have time to finish!).
I uninstalled BESR completely. Ran a Windows backup, took about 2 hours. Re-installed BESR, first full BESR backup also took about 2 hours. Thought I was done and moved on. Second time BESR ran, back to 30+ hours estimate. I let it run for about an hour just to ensure it was a throughput problem and not a time estimator problem.
I deleted all BESR recovery points off the external backup drive, redefined the target drive, ran another backup, same problem, 30+ hours estimate.
No changes to the system between backups, same results if I run it at my office or at home.