Slow Performance with BPCS User Signon after Y2K

We are experiencing a very unique problem.  Not sure wether it is related to 
Y2K or not.  I am aware of the access path for V4R2 for a user that needs to 
be created so that it doesn't take an hour for the user to signon however, 
since Y2K, it seems to take forever for a user to signon.  I have examined 
the sql trace and found the system is now building an index for the ZX3L01 
and the ZXOL01.  It is taking our users approx 3 min to signon on a 720.  
Prior to Y2K it was almost instant.  When I examine the trace, it says that a 
permanent access path cannot be built and that *MAP ASCEND is the temporary 
access path that was built.   If anyone could please help, it would be 
appreciated....  Is this a Y2K issue, SQL optimizer bug?????/

TIA

Jeff
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