I joined Vimeo a few weeks ago and was able to upload two video clips but then no luck on subsequent ones rendered the same way. I got the "starts uploading fast then stalls forever" that quite a few people have reported in Vimeo's forums. (My clips are well within length-limits, so that's not a factor.)
I notice that several Vegasfolk have successfully posted there.
Do you have a reliable "recipe" for rendering from Vegas to create clips that upload successfully to Vimeo?
I'm still shooting DV, not HD.
PS: I just joined to Vegas group over at Vimeo, but I don't see any discussions posted there, yet.