nepomukservicestub spews cv wait failure message to .xsession-errors

[ArdyFalls]

nepomukservicestub spews cv wait failure message to .xsession-errors after it has finished indexing. It outputs it so much that within a 2 day period the .xsession-errors file grew to be over 150GB!

here is the message it constantly outputs.
[/usr/bin/nepomukservicestub] QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument
QMutex::lock(): cv wait failure: Invalid argument

Computer:
Kubuntu 11.10 amd64

[ArdyFalls (afalls)]

It also likes to spew messages such as this
[/usr/bin/nepomukservicestub] "/usr/bin/nepomukservicestub(1835)" Soprano: "Invalid argument (1)": "Unknown protocol '' encountered in <some file that it is indexing>