The system has detected

Fragments of reports

The system would like to announce (audio) that it has successfully detected:
1957
...a parity error at some stage of the process
1958
...a very great class of errors
1959
...an enemy sub at an undisclosed range
1960
...aerial activity and computed the predicted points of impact of the objects detected
1961
...a signal buried in random noise that could not be detected even by observers who knew what to look for
1962
...earthquakes at a distance of 200 to 250 km
1963
...93 per cent of all fires to which it was exposed
1964
...air mass interfaces in clear air
1965
...its first intruder
1966
...many coding errors
1967
...ICBM launchings several thousand miles away
1968
...an optimum and moved towards it
1969
...Earth's presence
1970
...buried openings
1971
...the presence of an emotional word
1972
...an interspecies reactivity of rat, hamster, and cat viruses
1973
...a transaction record without a corresponding master record
1974
...errors attributable to analysts
1975
...wooden patrol boats and minesweepers with steel decks in up to twenty-six-foot seas
1976
...uninitialized variable error due to the misspelling of PI
1977
...an error which took place internally during the Enter operation
1978
...anteriorly located intracranial aneurysms by their characteristic signals
1979
...several situations in which an inappropriate distribution of the drug may have been taking place
1980
...a number of anomalies in the sense of LCSAJs which visually appear executable but in fact are not
1981
...a hard fault
1982
...seven times more defects than the human inspector
1983
...insufficient disk space while attempting to create a contiguous file
1984
...small air-filled cavities and metal rods in brick walls
1985
...AN ERROR!!
1986
...submarines at great distances and localised some to fairly narrow areas
1987
...a failure in the primary component
1988
...two deviations from the assumptions made by the usual analysis of co-variance model
1989
...explosive earthquakes as well as other shallow events not accompanied by explosive activity
1990
...an internal lack of consistency in the generated internal code
1991
...the item you were looking at
1992
...accidents on video tapes
1993
...this fault and the B side immediately took control and flew the remainder of the mission with complete mission success
1994
...a reasoning failure
1995
...the false presupposition that there are people working on 20 projects
1996
...an intruder occupying as little as 0.01% of the area
1997
...the license plate of a vehicle traveling at 100 mph
1998
...financially beneficial opportunities
1999
...texture defects, sewing without the fabric, defective cutting, and misplacement of pantyhose
2000
...the repair "I cannot no I can"
2001
...problems with the patient that clinicians had not identified
2002
...nothing (which was the objective)
2003
...the modem as a legacy device
2004
...a potential pedestrian slipping under the bus
2005
...that the user has decided to view another topic intensely
2006
...an invariant goal and it is not equal to the current visual state
2007
...the user's intention
2008
...topological defects inside a multilayer
2009
...her behavioral change and has identified her as a malicious participant
2010
...a strange pattern in your click rate and is acting to protect its advertisers from paying for nothing
Sources: varied. You should be able to google them, though.