It may very well be a network-design issue (ie firewalling, etc).
From the man page on traceroute:
Quote:
This program attempts to trace the route an IP packet would follow to
some internet host by launching UDP probe packets with a small ttl (time
to live) then listening for an ICMP "time exceeded" reply from a gateway.
We start our probes with a ttl of one and increase by one until we get an
ICMP "port unreachable" (which means we got to "host") or hit a max
(which defaults to 30 hops & can be changed with the -m flag).
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Therefore, if your net admin restricts UDP in any direction, or ICMP in any direction, you may very well be impacted by this...
