I posted the following text on the newzbin.com forums, but I think here is probably the better place to discuss about nzbget development:
I'm doing some "benchmarks" on a Pentium 200MMX and Debian sarge with a modified nzbget version right now.
And my modified version is definitly faster.
In this version nzbget keeps the articles in memory until a whole file is finished, then writes a temp file and forks the uudeview binary to decode.
On my 200MMX systen with about 400kb/s download speed it takes nzbget-0.1.2 about 11 minutes to download and decode a 45 MB/13 files post (11minutes real time, 9m30s user time).
The modified version does the same in about 3minutes real and 2m15s user time.
Using yydecode (yydecode.df.net) for yenc posts is even faster.
If anyone wants the source to try it, just send me a mail. But I didn't clean up .