The Unarchiver 3.3 (App Store version) causes tons of log spam:

Sep 24 10:38:35 Hostname sandboxd[9373] ([9363]): The Unarchiver(9363) deny appleevent-send com.apple.finder
Sep 24 10:38:35 Hostname coreservicesd[28]: pid=9363 not allowed to send AppleEvents to com.apple.finder
Sep 24 10:38:35: --- last message repeated 487 times ---
Sep 24 10:38:35 Hostname coreservicesd[28]: *** process 28 exceeded 500 log message per second limit - remaining messages this second discarded ***
Sep 24 10:38:36 Hostname coreservicesd[28]: pid=9363 not allowed to send AppleEvents to com.apple.finder
Sep 24 10:38:36: --- last message repeated 499 times ---
Sep 24 10:38:36 Hostname coreservicesd[28]: *** process 28 exceeded 500 log message per second limit - remaining messages this second discarded ***
Sep 24 10:38:37 Hostname coreservicesd[28]: pid=9363 not allowed to send AppleEvents to com.apple.finder
Sep 24 10:38:37: --- last message repeated 499 times ---

...and on and on. This came while extracting a buildroot.tar.bz2 archive.