Sudo causes timeouts on AIX

Symptom

The following error occurs when discovering an AIX server:

CTJTD0317E An error occurred. CTJTP0323E CTJTP0322E Unable to get port
map because the following command fails: [sudo lsof -Di -nP -i | awk
'{print $2, $5, $9, $10}' | sort -k 2 | uniq -f 1]:OsException:
CTJTP1140E The Command
[LC_ALL=en_US.ISO8859-1;LANG=en_US.ISO8859-1;export LANG LC_ALL;sudo lsof -Di -nP -i | awk '{print $2, $5, $9, $10}' | sort -k 2 | uniq -f 1]
failed in session
ssh2:/HostAuthcom.collation.platform.security.auth.HostAuth[taddmsvc][XXXXX]/null@10.10.100.16: timed out after 240.091 seconds..

And the sensor log shows the following:

2012-11-30 18:44:57,038 DiscoverManager [DiscoverWorker-2] GenericServerSensor-10.238.208.149 DEBUG session.SshSessionClient-
Executed command
[PATH=$PATH:/usr/local/bin:/bin:/usr/bin:/usr/X11R6/bin:/etc:/usr/sbin;L C_ALL=en_US.ISO8859-1;LANG=en_US.ISO8859-1;export LANG LC_ALL;sudo lsof -Di -nP -i | awk '{print $2, $5, $9, $10}' | sort -k 2 | uniq -f 1] on session ssh2:/HostAuthcom.collation.platform.security.auth.HostAuth[taddmsvc][XXXXX]/null@10.238.208.149
2012-11-30 18:48:56,959 DiscoverManager [DiscoverWorker-2]
GenericServerSensor-10.238.208.149 DEBUG
session.VeryAbstractSessionClient - readAsString:
java.io.IOException: InputStreamPipe closed
at com.mindbright.util.InputStreamPipe.read(Unknown Source)
at java.io.InputStream.read(InputStream.java:113)
at
sun.nio.cs.StreamDecoder$ConverterSD.implRead(StreamDecoder.java:354)
at sun.nio.cs.StreamDecoder.read(StreamDecoder.java:252)
at java.io.InputStreamReader.read(InputStreamReader.java:212)
at java.io.BufferedReader.fill(BufferedReader.java:157)
at java.io.BufferedReader.readLine(BufferedReader.java:320)
at java.io.BufferedReader.readLine(BufferedReader.java:383)
at
com.collation.platform.session.VeryAbstractSessionClient.readAsString(Ve
ryAbstractSessionClient.java:350)