I've recently had to download several large files from SDL (we finally got round to install Studio 2009, now that some customers are asking that we use it).
I found the download from the SDL site extremely slow. I checked, but the problem was not on our side: downloading even large files (e.g., the complete Open Office installation package) completed in just a few minutes from other sites. Nor was it a transient issue: when I saw how painfully slow the download was, I aborted it, to try again the next day... and the next one. No changes, even after opening a support ticket to complain about it (the very dubious suggestion from SDL was to disable my firewall and antivirus software. As I have no desire to also download malware I decided not to follow their suggestion).
In the end I bit the bullet and downloaded all files: it took some seven hours in all, but the download eventually completed.
Now I'm again downloading something from the SDL site: a mere 18 MB for the UE auto-suggest English Italian files. A download that should take just a few seconds took more than five minutes to complete.
SDL is clearly not paying enough for bandwidth.