I don't believe we've come to a conclusion on this error yet.
I have PL/SQL Developer 8.0.3. My co-workers have TOAD 10.X and PL/SQL Developer 8.0.0.
We recently upgraded our Dev database from 10.2.0.4 to 10.2.0.5.
All of a sudden, when I query dba_scheduler_jobs or open the Schedule | Jobs node in the Browser, I get the dreaded ORA-01882 error.
My PL/SQL Dev is using the oci.ddl thick client that came with InstantClient 11.2.

My co-workers are using slightly older versions of oci.dll.

So I'm almost as up-to-date as one can get. My co-workers are a version or two behind on things, but I'm the one getting the error and they are not.