even if its not illegal filesharing, its still using the DCC protocol for a wildly unsuitable purpose. Besides, the only free things i know of that are that size are linux distro's, and they are freely available from ftp's.
The point is that when someone abuses something and it goes wrong, they shouldn't moan. The DCC protocol isn't for files that huge.
I'm sure mentality will back me up on this.
And another thing, when was the last time you saw 1.4gb LEGAL files from a bot?
Anyway, since you want a proper answer to the query:
Its caused when the resume goes wrong and messes some bytes up, or they are lost somewhere along the line. Even tho the rar file is 1.4gb, winrar can only read up until the problem bytes, then it ignores the rest. As far as i know there is no way of repairing it without losing data.
