Can VirtualBox inhibit Bonjour or local network functions?

[MaxR]

I have noticed a weird thing running VirtualBox on a host that runs 64 bit OS Lion (10.7.3). Every time I start up VirtualBox, even if I only run it for a few minutes, within a day afterwards my network shares (the shared directories on the host computer) and even my Bonjour IM presence in iChat will disappear from the network. Rebooting always solves the problem, and then I don't have the issue again until I run VirtualBox. It doesn't seem to affect Internet connectivity so my suspicion is that in some way it adversely affects Bonjour sharing and other functions that depend on Bonjour. The funny thing is that it never happens right away, but it ALWAYS happens within several hours after I have started up VirtualBox.

I'm just wondering if maybe VirtualBox inserts a "shim" of some kind into the code that handles Bonjour (or maybe someplace else in local networking) and then does not remove it cleanly when you shut down VirtualBox, and that this code has a bog of some kind (memory leak? stack overflow?) that's like a ticking time bomb where Bonjour connectivity is concerned.

Has anyone else experienced this?

[BillG]

Could well be. Bonjour has been known to upset some VirtualBox operations in the past.