My late 2009 iMac has slowed down bad. The 16g of Memory drops all the time.
Machine restarted a few times and the report said suspect memory leak.

Couple of help questions please if I may:

1. Would a drive wipe and reload of OS cure the memory leak?
2. If so can I re install the applications via my Time Machine back up or would I have to re install them again manually ?
3. I am running Yosemite 10.10.5 any suggestions as to other ways of curing this memory leak?

Thanks guys.