http://www.dli.ernet.in/ used to be unusable, but for the last few weeks it's changed dramatically and it is now performing excellently. A whole book PDF in just a few seconds.

Also, there's an upgraded DLI somewhere, perhaps 6+ (haven't checked), and I found it a bad upgrade because it now shouts constantly about funding. One can't use it without having to sign up to a payment portal, and although one can pay zero, one still gets annoying messages. The older DLI still works for me. But with the improved ernet.in portal, I think the java DLI downloader may become unnecessary.

Dominik