we have a problem in our sharepoint installation.
We can edit the assignmet of a task when using normal editing forms.
When using the gantt view, person cannot be edited (I can select out of the adress book). When leaving the row, the two arrows signalling the server communication stay very long. after a time there comes up an error, that the user does not exist - the same user can be added in form view.
What could be the problem? It occurs independent of using all users from the AD or using only users from a special sharepoint group.
Many thanks and best regards