Crashing, teleporting and syncing Virtualbox

I’ve been playing around with Virtualbox over the last few days, trying to set it up just right for me. One of the hurdles was working around a bug in the 3.0.0 release that caused guests to crash when performing downloads in them. Changing the virtual network card from “PCnet-FAST III” to “Intel PRO/1000 MT Desktop” proved to be a good temporary solution, but the bug got squashed in version 3.0.2.
Next on my list was getting the “shared folder“, which I configured in Virtualbox (look ma, no samba), to automount in my Ubuntu-guest with read-write permissions for my non-root user. I ended up adding this line to /etc/fstab (the dmode and fmode-options did the trick eventually):

teleporter /home/frank/Desktop/teleporter vboxsf rw,dmode=777,fmode=777,uid=1000,gid=1000,auto 0 0

And to wrap things up I also installed the Mozilla Labs Weave-plugin, which syncs a.o. bookmarks and passwords in Firefox between my 3 environments. It caused me some headaches at first, synchronizing just seemed to take forever and no error was shown in the frontend. But I found some obscure messages (things like “Exception caught from onComplete handler of CryptoWrap__decrypt-57 generator”) in the verbose log and Google linked those to a post on the Weave Google Group which explained that the problem was with an incorrect “encryption passphrase”. And sure enough Weave was syncing happily after once I re-entered my -too complex- passphrase.