Server side: IVE SA-4000, system version 6.0.R5; client side: Mac Leopard (10.5.5) The problem is that the NC button, after successful login to IVE, may disappear sometimes; but show up other times. It only affected Mac users running OS X, with Leopard being the latest complaint. It does not appear to affect PC users, though. Could anyone advice what the issue might be? Thanks in advance.
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