Guest OS clipboard disconnected from external clipboard

[avok00]

My setup is this

Host OS - Windows Vista 64X, Virtual Box 2.2.2
guest OSes - many Windows XP and one Vista

I access the host OS with RDP (6.1) All of a sudden I am unable to clipboard paste anything from outside of guest OS to inside it. Or the other way around. Clipboard only works locally. Text copied from my RDP client PC or from host OS does not appear inside guest OS at all. And anything copied in clipboard inside guest OS in not available outside. This happens at some point and after that I need to restart the host OS in order to get the clipboard working normally again.

And I noticed multiple of those entries in the clipboard:

04:33:59.504 VRDP: Guest requested clipboard format 0x00000000 that is not announced by VRDP clients. Ignoring the request!!!

[avok00]

If somebody else is interested there is a bug for this here - http://www.virtualbox.org/ticket/4011