delete messages in the Messages/Alert Overview takes time

Hi,

We would like to inquire why for some users when they try to delete one messages in the Messages/Alert Overview takes them 5 minutes before it finsh. Also the workstation hang during this activity. These scenario are experienced by users who have inbox messages of more than 500. But for users who have less inbox messages can excute the deletion of message faster.We even tried to do this in the server for the same user but it takes 4 minutes to delete one message in their inbox.

How we could resolve the slowness in deleting inbox messages in SAP for those users?

Thanks,

Janice