We just discovered a bug where LimeWire can delete incomplete files immediately, making resumes impossible. The problem happens if you set the "keep incomplete files" option to anywhere between 24 and 49 days. Values between 75 and 99 days will also have the same effect, as will some other values. The problem is caused an overflow error.

I'm committing a fix now that will be released in LW 2.4. Many thanks to William Rucklidge for pointing this out and suggesting a fix. In the meanwhile, I'd recommend keeping the incomplete time at the default: 7 days.

-Christopher Rohrs