I've noticed lately (as have others around usenet) that several postings of late are HUGE rar's (>400MB ea) with very limited pars to fix any errors (<1 part).
Some of these are okay, but many have too many upload errors (and attendant not enough parity files) to correct.
There is a reason WHY uploads since the 'beginning of time' are 50MB rar parts, and at least enough pars to recreate at least a half dozen (or more) missing parts. Even if you use Giganews or Astraweb, errors happen.
There's been some folks here that have hit those postings, and they simply can't be repaired with the extremely limited pars.
Why these folks think that they're postings get out is beyond me. They think that usenet (and the internet!) are extremely error-free. Right.