I just used a slightly modified version of Cash's plugin to fix this :)

Got the same problem.

Solveby running this quick comparison:

SELECT *
FROM `elggentities`
WHERE TYPE LIKE '%user%'
ORDER BY guid DESC
LIMIT 0 ,2000

SELECT *
FROM `elggusers_entity`
ORDER BY guid DESC
LIMIT 0 , 2000

compared the columns

Changed in elggentities orphan guid [s] to enable=no

how to avoid this things happened again.