That's an interesting non-existing update. Perhaps you meant to say
KB952142?
I'm not sure how far you were behind in updating your system, but that
update is from a long time ago and has been replaced already (but not for
the reason you stated, just because it got superseded).
Also note that it is not a good thing to uninstall updates. Why it may
solved your current issue, it probably indicates you have another issue
still existing on your machine which only revealed itself by installing the
update. It means that you are now fighting symptoms instead of the issue.
Start with scanning your pst-file for errors with scanpst.exe;
http://www.msoutlook.info/question/77
Download and install the February Cumulative Update and try again;
http://support.microsoft.com/kb/961752