Tonight some comics downloaded just fine, but others quit before the complete file is acquired. This has not occurred on previous visits.
For example, I had no trouble with Space War 4, but could not get Green Hornet 7 or 13.
I have no trouble at all with files at DCM, so it's not my browser, ISP, download speed, and so forth. I do use NoScript, but I made sure to temporarily accept all scripts, so that's not it either. When I change the extension and try to unzip, it fails.
I'm using Firefox 25 for the Mac. I notice that when I monitor the download, the browser does not know how large the file is (not so at DCM). This may explain why it thinks it's finished before it is, but the same was true of Space War 4 and it came down just fine.
I'm going to log out and test on Safari.