I just installed UR.
I have ie9 installed, but my default browser is ff5.
UR freezes up when I drag a UR pane while web content is in view.
For example: i drag the child panel to resize it while there is a linked website in the main pane.
I registered UR last night and hope there is a workaround or resolution for this.
Excited to use the software once I figure this out.