I'm running 14.10 and have the same issue. The file doesn't grow too much. Lines comes usually by 2:
[ 3955.543] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 3955.990] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 3959.284] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 3959.529] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 3963.890] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 3964.140] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4013.833] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4014.243] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4016.663] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4016.980] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4019.183] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4019.739] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4058.541] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4059.421] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4064.022] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm [ 4064.501] (II) XKB: reuse xkmfile /var/lib/xkb/server-0B670699986B39D02BC43377BDEBB0D0129AED4B.xkm -- You received this bug notification because you are a member of Ubuntu-X, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/954426 Title: Xorg log flooded with "XKB: reuse xkmfile" To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/954426/+subscriptions _______________________________________________ Mailing list: https://launchpad.net/~ubuntu-x-swat Post to : ubuntu-x-swat@lists.launchpad.net Unsubscribe : https://launchpad.net/~ubuntu-x-swat More help : https://help.launchpad.net/ListHelp