I had a nightmare untangling logins and credit card details for a number of domains that all appeared to be personally registered to someone who'd left the company. Fortunately he had used the company email address and the registrars concerned didn't look too closely when I changed the details.
I've had what could be worse in the distant past, a Finance Manager who decided she would take an extra 30 days to pay all invoices, without telling any body and without considering that some invoices, such as ones for resold maintenance cover on a client's system, must be paid immediately. I managed to fudge round the inevitable breakdown whilst they weren't covered.
Biting the hand that feeds IT
