problem upgrading from maven 2.0.9 to 2.1

[Robert Glover]

  I'm at my wits end over this.  Working behind a corporate firewall, my "mvn 
package" command works perfectly when m2 and m2_home and path all point to 
maven 2.0.9.  But if I execute the identical "mvn package" but with m2, 
m2_home, and path all pointing to maven 2.1,  I get a quick build failure that 
says there is an authentication problem trying to access the maven "repo1" 
repository.  I'm at home and so can't paste the exact error message.