Many people have to connect to the Outlook Exchange Server to access their work emails.
Occasionally Outlook has problems connecting to the server.
Also I have seen 64 bit resolve other oddities for users that keep 10-20 word, powerpoint and excel files simultaneously...though that may be because it is not limited to 4gb of memory...
Check the power settings on the system as well as in the properties of the network driver which are used.
You will have to turn logging on to use the feature.