I already disabled the two items you mentioned above, but the scanning is still stopped after 30~40 seconds. The scan animation is still moving in the “Scan Summary” box, but nothing is updated in the “Scan Detailed Activity” box.
If it stopped at “Analyzed 1000 files containing 12.2 MB of data so far” and I killed the scan and started the scan, it would stop at approximately 1200 files again.
The site was hacked before and I believe that there are still some malicious files.