Right. One thing I did not think of to ask the OP was whether he had checked to see what services were running when he scans. I had a recent experience in which software I was already using was updated and then, all of a sudden, I found my image backup running at half the speed that I was used to seeing. I checked my services and found that the indexing service was started. I could not figure out why, since it was previously disabled. I determined that the updated software had turned on the indexing service. I reconfigured that software and also made sure that the indexing service was disabled again. That immediately restored the backup speed I was used to.