What I wrong? Every time I touch my mouse the viewer stops responding.

[Rolig Loon]

As you have discovered, there have been many bugs in recent upgrades of LL's V2 viewer.  If you are having better luck with a Third Party Viewer, then I'd say go with it, by all means.  The Firestorm viewer is proving to be very stable for most people, for example, and they have a responsive amd helpful support team.  If you like the V2 user interface, you'll find Firestorms' default screen familiar.  If not, you can easily customize it to look much like the classic V1 interface.  There are many other TPV alternatives (http://wiki.secondlife.com/wiki/Third_Party_Viewer_Directory) and you can always go back and try earlier versions of V2, if they worked better for you (http://wiki.secondlife.com/wiki/Category:Release_Notes).  Just remember, if you install an older V2 version, to go to Preferences >> Setup and UNcheck the box that enables automatic upgrades.

[Rolig Loon]

As you have discovered, there have been many bugs in recent upgrades of LL's V2 viewer.  If you are having better luck with a Third Party Viewer, then I'd say go with it, by all means.  The Firestorm viewer is proving to be very stable for most people, for example, and they have a responsive amd helpful support team.  If you like the V2 user interface, you'll find Firestorms' default screen familiar.  If not, you can easily customize it to look much like the classic V1 interface.  There are many other TPV alternatives (http://wiki.secondlife.com/wiki/Third_Party_Viewer_Directory) and you can always go back and try earlier versions of V2, if they worked better for you (http://wiki.secondlife.com/wiki/Category:Release_Notes).  Just remember, if you install an older V2 version, to go to Preferences >> Setup and UNcheck the box that enables automatic upgrades.

[Tristizia Demonista]

Although V 2.8.0 has some serious bugs, this sounds more like a problem caused by your computer. Try a CLEAN install and look if that problem still exists.