I am from the startup company Roozz. We are sorry that some people are unable to uninstall the Roozz player. We have located the bug and plan to make an update next week which will fix the uninstall problem.
We are also sorry that some people feel that our software is Malware. This is not the case or intent. The roozz technology makes it possible to run hundreds of software applications in the browser without installing them on the end users machine. We are also very careful about which applications we allow to run on our platform to avoid security risks to users machines. And we scan all applications for virus before they are released.
You can compare the Roozz player to Flash player and Silverlight.
The reason we have decided to show information about the platform when the Roozz software are auto updated, is because many users have requested more up-to-date information about the platform. At least we do not install toolbars and additional software on users computers like many other freeware companies and download portals do.
Please contact the Roozz team for additional questions.
Highlighting workaround in the comments until next release is out:
A temporary update is being rolled out that will ensure the notice is showed max once a week. Workaround before the next update is out: install the latest plugin version at www.roozz.com and then uninstall it, and for Windows Vista / 7 open Task Scheduler on Windows and remove the 'Roozz' task (one part of the bug is it fails to remove this).