I ran into this today: IEXPLORE.EXE.EXP.LOG
I used Advanced System Care, the free version, to remove it. ASC is available as a free dl from download.com
I used the Disk Cleanup utility. It took two tries, but we rid ourselves of this IExplore 21GB log file. We were alerted to the problem because System Restore suspended itself due to lack of disc space. The log file was taking 21 GB of a 38 GB drive.
I hope this helps. Again, I had to go back and use the utility twice to make it work. The exact sequence which worked was:
Empty the Recycle Bin
Disk Cleanup Utility to remove the log file.
Previously I had reduced the % of hard drive System Restore was using to no avail. 12% to 4% was supposed to give us back 3.5 GB, but the drive still reported it was full. That's when I tried ASC.
I will report back here if this problem comes back.
Dan