periodically can't type in text field
When they are working in various programs (but all are PPC binaries), suddenly they can not type in a text field (i.e., in a cell in Excel or in a text or number field in Quickbooks). The solution is to click outside the current field, then click back into the field and they can type again. But it happens enough to be very annoying.
I called Apple support and they claim to never have heard of this problem (but then they always say that even when a fix appears on the 'net later that day).
Any ideas?
Thanks...
Mac Mini, Mac OS X (10.5.1)