27" iMac, 3.2 GHz core i5 24 GB DDR3 3TB Turbo, GeForce GTX 680MX 2048 MB, OS 10.9.2 (13C64).
iMac began flickering, control degraded, launchpad out of control, Time Machine not accessible, display random weirdness.
Several restarts extremely slow shutdown and very slow strange restart sequence, opened with same if not worse situation. Random windows opening. Desktop icons flickering.
Panic!. Shut down, had breakfast.
Restarted after about 30 minutes.
Everything normal. No problems. Norton antivirus running now.
History - computer on 24/7, frequent overnight iTunes music operation.
?????????????????????
New plan - shut down at night.
Anyone else have this type of problem?
Update: Norton Antivirus complete, no viruses found.
iMac began flickering, control degraded, launchpad out of control, Time Machine not accessible, display random weirdness.
Several restarts extremely slow shutdown and very slow strange restart sequence, opened with same if not worse situation. Random windows opening. Desktop icons flickering.
Panic!. Shut down, had breakfast.
Restarted after about 30 minutes.
Everything normal. No problems. Norton antivirus running now.
History - computer on 24/7, frequent overnight iTunes music operation.
?????????????????????
New plan - shut down at night.
Anyone else have this type of problem?
Update: Norton Antivirus complete, no viruses found.
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