I'm using Virtualbox for quite some time now, and I really enjoy using it. There are only two things which make Virtualbox a less enjoyable application.
#1 Fonts are messed up in consoles (Windows console and Linux terminals) and input menus such as in Windows login windows. They are simply not readable, sometimes even gone, and then suddenly they pop up again.
#2 I can mount images in Debian via Virtualbox (without GDM, totally in terminal mode) but I can't find them. I want to install the Virtualbox Additions but I simply can't find the drive in /media/cdrom. While in a GDM (GUI) mode I can
Specs:
Debian Lenny 2.6.26-2-amd64
Virtualbox 2.2.2
I would like to hear some feedback, thanks in advance