Your bookmarks should work again after DNS gets updated/propagated with the new box's IP address. Essentially the same reason why cookies need reissued - issueing server was www.perlmonks.org, but the new box is
(temporarily) just 206.170.14.76 with no DNS name.
At least, that's been my experience the other couple times His Vroomness moved PM since I've been here.
Update: As merlyn points out below, www.perlmonks.org is, for the moment anyway, just a redirect from old box to the new box's IP address. I wouldn't be too concerned - vroom has always been waaay more responsive than any could ask for. Doubtless things will be back to normal in no time.
cheers,
Don
striving for Perl Adept
(it's pronounced "why-bick")