jimbopalmer,
Yes indeed.
Thanks for the timely reminder.
Member jimbopalmer has noted for a while that manual efforts to establish 100 mb. Fast Ethernet can easily prove self-defeating.
Usually, allowing autonegotiation to occur on both client adapter and switch is preferred to any manual settings. But, alas, not always. But the exceptions are much rarer than the rule: let the hardware do its stuff until unambiguously convinced it is not doing it right. Then intervene.
See: faq586-4186