December 9th, 2012, 07:06 PM
Join Date: Sep 2011
Device(s): Triumph - CM7.2.0 mostly
Carrier: Not Provided
Thanked 352 Times in 265 Posts
Yes, delete them.
They will be written again and will begin to grow, eventually reaching the same size.
To stop this from occurring again, after you delete them:
Wait long enough for them to be re-created, but not so long that they get large.
While they are still small, using ES File Explorer or similar app:
(ES File explorer instructions)
Long press on each file, and scroll down to Properties.
Then click the Change button next to "Permissions", and remove the "W".
This removes Write access and the system can no longer write to the files.
Problem solved without installing a custom ROM.
Root access required, and you also must enable root access and write privileges in ES File Explorer in its settings.