I use Adium in my mac as a client for MSN messenger. (I have also tried the "official" live messenger for mac for a while but it had even worse issues than what I am experiencing with Adium).

Everything works fine for the first 5-10 minutes, perhaps until the first automatic "away", then suddenly any message I send is followed by a dozen or so messages saying:

"Message could not be sent because a connection error occurred:"

and

Message may have not been sent because a timeout occurred:

If I send a few messages, they usually eventually arrive (all at once) after a long delay.

Windows machines on the same network running live messenger work fine.

Any ideas why this might be, or suggestions for a client that might work when both Adium and Microsofts own messenger for mac seem to disconnect?