16:15:56 Downloading updates list ...
16:17:10 Updates list downloaded.
16:17:39 Preparing download ...
16:18:38 /private/var/folders/Rl/RlNpIvVBFKeOfbRBY3PSwE+++TI/-Caches-/com.apple.SoftwareUpdate/swcdn.apple.com/content/downloads/37/52/061-4731/RnMdwqhyLzvvWSVGvHRCGLKNwdHjhTz8HM created
16:18:40 Downloading iLife Support 8.3 ...
16:19:45 iLife Support 8.3 downloaded.
16:19:47 Moving packages to temporary folder ...
16:19:49 Extracting MacOSXUpdCombo10.5.4.pkg ...
16:20:19 MacOSXUpdCombo10.5.4.pkg extracted.
16:20:19 Detecting cpuids for MacOSXUpdCombo10.5.4.pkg ...
16:20:21 Done
16:20:22 No cpuids found !
16:20:22 No need to rebuild !


That's the log...
Can you understand the situation?