[Kalcor]

The server ran out of memory. That doesn't mean it's related to downloading. It could be a plugin with a memory leak, for example. The compression thing was just the first to notice it.

There could be a new memory leak in DL, but nobody else has reported it. Most serious servers on DL are using http downloads, not the internal downloading.

I'll check the internal downloading compression for memory leaks.

Apart from that, I'd need to know what plugins you're using.