Dom, your ESET Scan showed infection but not that you cleaned it. You need to run it again and this time have it clean but first run the ATF-Cleaner and clean out all the temp files. Then run ESET again, have it clean if it finds something and please copy/paste the log here, don't attach it.
How long has this slow start up been going on? I can't recall, have you always used Norton av?