applets not stable in IE7?

I have an applet that we've been using internally for a few years now via the plugin. A few months ago I upgraded the used JRE to 1.6 and life was good. It ran flawlessly under FF and IE6 (with the very occasional hangup, where the JVM froze IE during VM startup).

A few weeks ago my system upgraded to IE7 and life no longer is good. 4 out of 5 times I have the startup freeze. I then have to kill IE. EXACTLY the same applet (same url) runs without any problems in FF.

Any sharers of my misery?

[516 byte] By [tbeernota] at [2007-11-26 19:43:03]
# 1

For illustration I made a few snapshots:

http://tbee.dyndns.org/stuff/DH2_ff.jpg

http://tbee.dyndns.org/stuff/DH2_ie7a.jpg

http://tbee.dyndns.org/stuff/DH2_ie7b.jpg

The first shows the applet in FF as it should be; note the small margin on the outside (best visible at the left bottom) which does not participate in the blue gradient; that is the HTML page that holds the applet.

Now, IE7a shows a full freeze, just white. While IE7b is more interesting: you can see that IE7 itself has frozen, because I alt-tabbed to my email client and back, and the screen of Thunderbird is visible in the mentioned HTML margin around the applet. But the applet itself is running and I can control it.

I suspect there is something that happens during applet startup that is asynchronous. IE7 always freezes, the question is if the JVM beats it to it.

tbeernota at 2007-7-9 22:25:47 > top of Java-index,Desktop,Deploying...