Yep, that's a good run down for slow computer. I think there are some 'stickies' here. It would be so helpful when users think they have malware if they told us right off what there problem was. I am very big on maintenance, always encourage it strongly.
Every log I look at here has all or most of these loading:
QuickTime Task
Musicmatch Jukebox
iTunesHelper
TkBellExe - RealPlayer Update
ISUSScheduler or ISUSPM Startup - InstallShield Updater Service
DVDLauncher - CyberLink PowerDVD
Adobe Reader Speed Launcher
Google Updater
These are mentioned in the slow computer write up. I've tried to encourage all of them stopped along with some of the other 'usuals' like too many startups, disc cleanup et al. Plus add the Java updater, which is strange because most don't have the current version! I think most don't understand that programs don't have to start on boot to be available.
When I use the Error Check, I do the scan and fix, reboot. Some don't like the reboot-but I've found that works for me.