Just old computer or malware?

Hello,
A friend of mine has an old computer that is always freezing up literally when you open any program. Here is the log:
Logfile of HijackThis v1.98.1
Scan saved at 12:32:25 PM, on 6/16/2006
Platform: Windows 2000 SP4 (WinNT 5.00.2195)
MSIE: Internet Explorer v6.00 SP1 (6.00.2800.1106)

Running processes:
C:\WINNT\System32\smss.exe
C:\WINNT\system32\winlogon.exe
C:\WINNT\system32\services.exe
C:\WINNT\system32\lsass.exe
C:\WINNT\system32\svchost.exe
C:\WINNT\system32\LEXBCES.EXE
C:\WINNT\system32\spoolsv.exe
C:\WINNT\system32\LEXPPS.EXE
C:\Program Files\Symantec\LiveUpdate\ALUSchedulerSvc.exe
C:\Program Files\Common Files\Symantec Shared\ccSetMgr.exe
C:\WINNT\System32\svchost.exe
C:\Program Files\Norton AntiVirus\navapsvc.exe
C:\WINNT\system32\spool\DRIVERS\W32X86\3\HPZipm12.exe
C:\WINNT\system32\regsvc.exe
C:\Program Files\Norton AntiVirus\SAVScan.exe
C:\WINNT\system32\MSTask.exe
C:\Program Files\Common Files\Symantec Shared\CCPD-LC\symlcsvc.exe
C:\WINNT\System32\WBEM\WinMgmt.exe
C:\WINNT\system32\mspmspsv.exe
C:\WINNT\system32\svchost.exe
C:\Program Files\Common Files\Symantec Shared\ccEvtMgr.exe
C:\WINNT\essspk.exe
C:\Program Files\Common Files\Symantec Shared\ccApp.exe
C:\Program Files\QuickTime\qttask.exe
C:\WINNT\system32\ntvdm.exe
C:\WINNT\System32\svchost.exe
C:\WINNT\system32\wuauclt.exe
C:\WINNT\explorer.exe
C:\WINNT\system32\msiexec.exe
C:\Program Files\Common Files\Acronis\Schedule2\schedul2.exe
C:\Program Files\Common Files\Acronis\Schedule2\schedhlp.exe
C:\Program Files\Acronis\TrueImage\TrueImageMonitor.exe
C:\Program Files\Internet Explorer\IEXPLORE.EXE
C:\Documents and Settings\Administrator\Desktop\hijackthis\HijackThis.exe