Every so often kwrite pauses for a few seconds. This may well be due to slow NFS. However the problem is what sometimes happens next. Occasionally any further text typed into the window is entered as what seems to be random text at random points on the current line. It does seem that you get one character entered for one character typed, but other than that there is little resemblance between what is typed and what appears in the window. The only way to resume correct behaviour is to close the file and reopen it.
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: kate 4:4.13.3-0ubuntu0.1
ProcVersionSignature: Ubuntu 3.13.0-67.110-generic 3.13.11-ckt27
Uname: Linux 3.13.0-67-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.18
Architecture: amd64
CurrentDesktop: XFCE
Date: Wed Nov 11 17:24:18 2015
InstallationDate: Installed on 2013-08-21 (812 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130214)
SourcePackage: kate
UpgradeStatus: Upgraded to trusty on 2015-06-11 (153 days ago)
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Ubuntu 14.04 (trusty) reached end-of-
I'm setting the status of this bug to 'Incomplete' as it's not seen any activity for some time. If this is still an issue when using a currently maintained release of Ubuntu then please let us know which one(s) otherwise this bug report can be left to expire in approximately 60 days time.