Running HiJackThis generally is NOT routine maintenance and never advised to be used routinely.
It is for use AFTER running the normal scanning tools and removal of malware. Then it "might" be suggested to run HJT to see if there are any unusual entries.
I see none in this log, but HJT only sees certain things, this is no guarantee. The only way to do routine maintenance is weekly scanning with an av program a good anti-malware program like MBA-M, keeping temp files and cookies cleaned out. That is good routine maintenance.