Some instability with Mac OS 10.8.3

I recently updated my OS to 10.8.3 and both my earlier version and the current version of Libre office crashes out when I try to do anything other than the simplest text input.
I upgraded to Libre office version 4 in the normal way but no change. I then did a complete clean installation, uninstalling the extant Libre office (version 4)with Mackeeper and then reinstalled a newly downloaded version 4 of Libre office, still no change.
Occasionally I get a message from the software that another instance of the Libre office is currently running, but other than this I see no evidence that this is the case.
Please help, This is my first problem with either Libre office or Open office before it and I’m pretty stuck without it having chosen not to bother continuing with a proprietary office suite, otherwise this is a fab pIece of kit.
Many thanks

Mackeeper IS THE PROBLEM !!!
I have a very bad news for you …
It’s the biggest mistake ever you can do to install Mackeeper on a Mac !
Why you install it ? you are on a UNIX system !
Ok now it’s done, even if you uninstall Mackeeper, it will be still hidden on you system trying to control your Mac

Here you can find the solution and some helps >

1.http://applehelpwriter.com/2011/09/21/how-to-uninstall-mackeeper-malware/

Mac OSX DO NOT NEED antivirus or pseudo antivirus or something who say “make your OS faster and cleaner…”, but if you absolutely want one, check and read here >