This may be unrelated? but, generally the first invocation of FARR on my system will not focus the FARR window correctly (with cursor, etc). No dramas, just have to delete the alias and search string that went to the text editor by mistake and do it again after clicking into FARR... Never freezes though.
I do get FARR crashing quite regularly after updating the Plugins (during development for example). The Plugin window will display normally, but when I click "OK" FARR disappears (crash and burn).
Normal running is fine though. I think I should go through and clean up my installed plugins: I noticed some were throwing errors in the error log