I am having a frustrating problem trying to access mail from the Notes client on a workstation at one of our offices.
We recently hired a new employee and thusly called the host of our Domino server to create a new ID file and mailbox for her. Somewhere along the line, after switching to the new ID and changing the Location Settings to reflect her new mail path, trouble began.

The Notes client starts up fine and asks for the user's password. But when attempting to access mail, it tries to connect but goes REALLY slow, to the point of appearing hung up. After literally 5-10 minutes of appearing frozen, it produces one of the following errors (in order of liklihood):

-Illegal Circular USE: CSEventClass
-Illegal Circular USE: CoreEmailClasses
-Network operation did not complete in a reasonable amount of time; please retry.

The workstation is fully functional by all accounts, little software installed, no ad/spyware, no virusses.

The Lotus Notes client has been uninstalled and reinstalled several times - program removed, folders deleted, registry entries taken out, the works - but the error still occurs with both the new AND former user (who did not experience this problem previously).

The network is fine, as other users on it connect from their workstations without incident. The problem workstation performs well on network speed tests and gets fast responses when pinging the remote Domino server.

The new mailbox also appears okay, and can be accessed from other computers. The problem workstation now runs into trouble when trying to connect to any ID/mailbox, not just the new one.

So I'm stumped! Are there any recommendations short of formatting the hard drive and reinstalling the operating system?

Answer
May I ask, it is a case that you have tested this, or are a lot of people like this?
Do you have a difference to test such a knot country in different network lands?
For example: Test and test with the internet network in the regional network; Is there state of exceeding hour of trade of networks to take place too in company's other systems in addition?

請問一下，你有測試過這是個案，還是很多人都這樣呢?你有分別測試這樣的結國在不同的網域嗎?比如說：在區域網路測試與網際網路測試；另外公司其他系統是否也有網路交易逾時的狀況發生呢?