Im lost. Yum wont work - needs 2Mb on partition which has 1.4Gb free

This is df:

/dev/mapper/system-usr 2.9G 1.5G 1.4G 52% /usr 

This is yum: Trying to instal nfs-utils..

Transaction Check Error: installing package rpcbind-0.2.0-11.el6.x86_64 needs 60KB on the /usr filesystem installing package nfs-utils-lib-1.1.5-6.el6.x86_64 needs 280KB on the /usr filesystem installing package nfs-utils-1:1.2.3-39.el6.x86_64 needs 2MB on the /usr filesystem Error Summary ------------- Disk Requirements: At least 2MB more space needed on the /usr filesystem. 

Permissions:

drwxr-xr-x. 15 root root 4096 Oct 4 2013 usr 

OS:

Oracle Linux Server release 6.4 

WTF is going on??

Edit Everything is solved. File system/disk is fine. Thank you for quick help!