Thanks, Thomas. I'm running Malwarebytes Anti-Malware 1.2.4 on OS 10.8.5. I understand how the number of files to be scanned can make a difference in the scan time, but there was very little that changed on my computer since Tuesday, when the scan for VSearch took only seconds.
Could something have changed significantly in the signatures that is causing the scan to run much longer?
It's not the scan time alone that had me concerned: I just happened to visit a website on Wednesday that displayed a highly suspicious dialog box that clearly would've gotten me into trouble had I clicked on it. Instead, I immediately left the page without clicking anything. My computer exhibited no troublesome behavior after that.
But then, when I launched Malwarebytes Anti-Malware before shutting down (as I do every night), and it became "stuck" on Adware.VSearch, I immediately remembered that website I'd visited earlier and thought that perhaps something had been downloaded even though I clicked nothing and it was now causing trouble with Malwarebytes Anti-Malware.
I launched Malwarebytes Anti-Malware before beginning to write this, taking note that the scan could take longer than 15 seconds or more and, as of this moment, the scan has been working on Adware.VSearch for 30 minutes. My Mac's Console has been reporting, every thirty seconds:
"Nov 3 09:38:48 Mikes-Mac-mini.local Malwarebytes Anti-Malware[586]: replyServiceStateOK"
Please advise. Thanks.