Anyhow, someone wrote a patch awhile back (like a year ago) to fix sync problems with large LJs. I finally got around to sticking it in the source and recompiling the application into a distributable package. It just requires .NET 1.1.
If anyone knows how I can put it on SourceForge, that'd be great, since I don't want to use my own server's bandwidth indefinitely for this.
But for the time being, download it here:
Or, if you already have it installed, just download this:
And extract the contents into Program Files\LJArchive\.
I'd say let me know if you have any problems, but I'm not actually a developer, so I doubt I can help.