The biggest 'nasty' I know of relating to implementing/running Jabber is that Yahoo, MSN etc., erratically update/change their protocols without much (if any) warning. So your users may be unexpectedly without access to their service of choice for a few days whilst new transports are writted/updated and implemented. This is based on watching people administer Jabber servers on a small scale (<100 users) rather than doing it myself.
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Date: 2005-12-06 18:49 (UTC)