Weblogic 7.0

Has anyone successfully used the java security API under WLS7.0 ?
My application uses MD5withRSA for signing, and it worked fine under WLS6.1
(just using the default Sun security providers; I didn't have to edit
java.security at all), but under WLS7.0 I get a NoSuchAlgorithmException.

Comparing the jdk distributions each server is using gives no clues.

Anyone have any ideas what is going on?

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