OK sure.
Just in my case, I generally have a few things coming down at once.
If one does timeout, it just jumps to the next file and carries on, and goes back to the other one later.
If only downloading one file, and it times out, it seems to wait a little while, and start again.
I've noticed before, my router stops flashing... then later, it's flashing again. Either way, whenever I've left it, and come back, it's always downloaded what I wanted.
So, sorry to hear you've been having problems like that. That would annoy.
Speaking of the speed issue as well by the way.
Last night, quite late, I turned on my PS3 to see if anything was on the US store. Spotted a few things (blimey, that Juiced looks awful)
Downloaded Juiced at about 950mb. Wrote an email to somebody, read the forums, and when I came back, it was already downloaded, and I had a quick go... so it must have been flying down, so no complaints about a PSN speed problem here.... US at least.
V1N.