Module fails silently if fetching tags for user fails with 401 or 403

The module will not issue any warnings when delicious' API reports a 401 or 403 error no. After receiving the code it will log it to the database and on fetching new tags it will skip this user.

The following code shows all delicious user on the local installation:
SELECT DISTINCT(u.uid), u.name, d.user, d.pass, d.lastupdate, d.lastcode FROM users u INNER JOIN delicious_user d ON u.uid = d.uid;

Use this command to reset the last code and make tag fetching work again:
update delicious_user set lastcode = 0 where uid=YOURID;