Hello,
I am having a problem on my Virtualbox instalation (Windows 7 guest and Debian Wheezy as host, my machine is a HP Desktop with dual monitors and a SSD, dunno if it helps) And the issue occurs, when I copy a file, for example, that shows a dialog with a progression bar, it copies a little and freeze, it will stay there for hours, and it will only advance and copy the file if I move my mouse (really, really weird, but that's what is happening).
And I noticed that the clock is always off-sync with my host machine, I need to synchronize my host machine clock for the guest clock became right but it will be wrong minutes later automatically.
Does someone has an idea of what is happening?