Problems with Apple's Security Update 2011-005 (Lion)? [duplicate]

Possible Duplicate:
Why folders keep shifting their positions?

Today I downloaded Apple Security Update 2011-005 for Lion (http://support.apple.com/kb/DL1447). However, I got some issues here. After the update I noticed that some of the folders on my Desktop was rearranged. Moreover, my Mac started slowing down.

Does anybody else have same problems?

The update replaces 3 files, all pertaining to your system's keychain. They are as follows:

/System/Library/Keychains/EVRoots.plist
/System/Library/Keychains/SystemRootCertificates.keychain
/System/Library/Keychains/SystemTrustSettings.plist

It is impossible that the update has caused your problems. Look elsewhere.

The arrangement of icons on the desktop and in folders is controlled by the (usually hideen) file .DS_Store. If you deleted this file or it became corrupted, your icons may have shifted around. It should not affect the speed of your computer though.