it just got even more stranger:
1- the problematic machine has same version (see above) as the machine that worked ok
2- was showing the issue only when using Firefox locally on that machine to log in to the server running there
3- Just tried to log in to the other server's MonoX on another tab and it showed Silverlight ok when I pressed Upload
4- Then went back to the 1st tab and now it works there too (one minute before it didn't)
in between 2 and 3 I just visited
http://silverlight.net without clicking anything there
A) so a question I have is if you were referencing some Microsoft scripts remotely to detect Silverlight? Is there a chance that machine had cached older detection code locally in Firefox, but find it strange since I think I had run CCleaner (
http://piriform.com) tool recently
B) other strange thing was that in IE on that specific machine only it kept not working, but then I noticed that "ActiveX Filtering" was on (from the security button's menu, but also showing indicator on the address bar to turn it off when it has filtered something off). Obviously that was the issue since Silverlight is an ActiveX control. I'd expect some better script from Microsoft there to inform the user (but maybe IE doesn't give any info to the script that filtering has occured), or IE to flash that filtered-content button on the taskbar, since you may not notice it