Limit Update download bandwidth?

[NoOp]

Is there any way to limit the download bandwith from the update-manager?
For example in a similar manner that you can limit the download
bandwidth in gwget?

Every time I do an update on my machines the update-manager sucks up the
entire bandwidth on my dsl link. As a result, web browsing, other
internet activities by the machine being updated, as well as other
sharing the link are pretty much hosed until the updates are downloaded.