Problem with Crypted URL

[Andrew Berman]

I upgraded from 1.3.4 to 1.3.5 and now I am seeing this error all over the
place in my log files..

[ERROR] 21:44:24 CryptedUrlWebRequestCodingStrategy - Invalid URL:
foo/?x=kSQEmQImbZiH47lvkBIVh0gnXDVDx7-UQqHufLUVx5IVu10xEJYI8UXQ2B0gQCTDdAzJ7rUByXI
org.apache.wicket.WicketRuntimeException: Unable to decrypt the text
'�$^D�^B&m���o�^R^U�H'\5Cǿ�B��|�^Uǒ^U�]1^P�^H�E��^] @$�t^L��^A�r'
        at
org.apache.wicket.util.crypt.AbstractCrypt.decryptByteArray(AbstractCrypt.java:145)
        at
org.apache.wicket.util.crypt.AbstractCrypt.decryptUrlSafe(AbstractCrypt.java:67)
        at
org.apache.wicket.protocol.http.request.CryptedUrlWebRequestCodingStrategy.decodeURL(CryptedUrlWebRequestCodingStrategy.java:250)
        at
org.apache.wicket.protocol.http.request.CryptedUrlWebRequestCodingStrategy.decode(CryptedUrlWebRequestCodingStrategy.java:98)
        at org.apache.wicket.Request.getRequestParameters(Request.java:171)
        at org.apache.wicket.RequestCycle.step(RequestCycle.java:1233)
        at org.apache.wicket.RequestCycle.steps(RequestCycle.java:1353)
        at org.apache.wicket.RequestCycle.request(RequestCycle.java:493)
        at
org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:355)
        at
org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:124)

Anyone have any ideas what in the world is causing the jibberish?  I am
using JDK 6 and Wicket 1.3.5.

Thanks,

Andrew