With the most recent update to Internet Explorer, all 3 of my PC's lost access to the Slingbox over the local network. However all 3 PC's connect ok if I turn off XP's Firewall in each case. I would prefer to set this application up as a "Firewall Exception," however nothing related to the Slingbox appears in the list of plausible choices. Has anyone else succeeded in this?
You can try to Reset the Plugin using Internet Explorer. If the issue persists, you can install a different browser like Mozilla Firefox to determine if you experience the same issue.
Let us know how it works.