Com.ms.securityExceptionEx in IE -- started from local disk

Hi,
I use an applet that connects via intranet to a database. I know about all the security issues related to that, but here's the problem:
** it used to work: **
- starting the applet from my local disk, it did work before in the browser (IE, security settings medium or low). starting it from the file/web server, it didn't work due to the security issues ('access denied').
- changing the java.policy settings and using the plug-in and HTMLCOnverter, it obviously did work also when loading from file/web server.
** it doesn't work anymore: **
- days later, it doesn't work anymore without using the plug-in. security settings low, starting from local disk!! The message is:
com.ms.securityExceptionEx[myapplet.mymethod]: cannot access myhost.
I found this error message here in the forum, but often related to sockets or rmi. My applet is as simple as you can imagine and doesn't use any sockets or rmi. It works using appletviewer. Microsoft says sth. like 'an untrusted applet tries to execute a trusted method'. Something messed up with my IE? Is there any java.policy-like file or option for IE?
Thanks for any help
Buck

Please find a solution and forward it to my mail ID: [email protected]

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