Java 1.5.09/10 Java Applet on Vista - starts but never downloads files

We are attempting to test a java 1.5.07 compiled and signed Java applet with Windows Vista (from MSDN).

Logged in as an administrator on the client PC, we installed the 1.5.09 and the 1.5.10 JRE on the client.

We then changed the html of the applet page to specifiy the new plugin version so it matched the JRE installed on the client.

When we start up IE7, point to our HTML applet page, and attempt to download (cache) our applet, the default Java plugin graphic with the progress bar onthe bottom shows up, but no progress is ever made.

Taking a look at the Java console with full debugging turned on, we don't see any activity. When I dumped the classloader list, it only shows the codebase string, but no classes are actually loaded.

I thought that maybe a popup window (asking to verify the certificate) might have popped up and was hidden by another window, but that's not the case. It never appears.

Does anyone have any thoughts or suggestions? I can certainly attempt to capture more debug if someone can point me in the right direction!

Thanks!

-Matt

[1118 byte] By [matthewleara] at [2007-11-26 12:20:28]
# 1
Is your html generated by the HTML Converter utility? Its output doesn't work with IE7. See bug 6484462.
bajhcaa at 2007-7-7 15:10:37 > top of Java-index,Archived Forums,Socket Programming...
# 2
> I can certainly attempt to capture more debug if someone can point me in the right direction!More information may help. Take a look at the debugging and tracing information in the Java PlugIn Developers' Guide.
ChuckBinga at 2007-7-7 15:10:37 > top of Java-index,Archived Forums,Socket Programming...
# 3

Ok, some more info - and this gets interesting!

The server is located in a DMZ here at work. (We have offshore teams in russia who are developing and testing code)

It seems to be an issue with the internal firewall/DMZ here at work.

We moved the codebase to a machine that is locally located (not in a DMZ) and presto, the applet begins to download.

When I find out more information, I'll post in case anyone else comes across a similar concern/issue. It may be the firewall/router vendor?!?

-Matt

matthewleara at 2007-7-7 15:10:37 > top of Java-index,Archived Forums,Socket Programming...