Problem: Using SharePoint 2010 in IE 8; the default context menu like document library items menue works only once on each page then stop responding unless the page is refreshed.
Java scripting is enables in IE, the sharepoint portal is in trusted sites.
What could that be? Any hints?
Have you tried changing the zoom size? I have had a similar problem with list items and was able to recreate it when the zoom setting was set to 125 %. The problem went away when I set the zoom setting to 100 %. This is odd and unexpected but it worked...
Another approach/test would be to see if this problem occurs with IE 9.
I had the exactly same problem, and after some hours of search, I finally found that it comes from the ToolbarType parameter of my XsltListViewWebpart. Set on Standard, I have the problem, but if I set FreeForm, it works !
I think it is a bug of SharePoint 2010.
Hope this will help.
Some articles that helped :
The solution in my case (Just setting the ToolbarType was not enough, I had to Apply the changes on the webpart)