Not sure why that should be the case. If it is due to LW, then perhaps use this tip
Tip: Purge the Downloads Queue! & also keep shared files less than 2,000 for OSX.
BTW did you end up doing the SAFE Boot & Repair permissions? 1st do a safe boot & repair permissions; (1)
Mac OS X: Starting up in Safe Mode; & then (2)
Disk Utility's Repair Disk Permissions. Then reboot normally.