Anybody using Xpress Mail?

I've been using Xpress Mail with limited success for the past few
months, but haven't been very hapy with it. More often than not, I get
a message that, after getting server changes, it can't connect to
desktop. When I get back to my office, I see that the desktop client
has disconnected for no apparent reason.
Anybody else using this service and having similar problems?
.