Error when saving

Hi everyone,
I come seeking help regarding an issue I come across when I attempt to save a new page or post.
I type everything like normal, adding title and body and when try to publish the page/post I get this error:
http://img413.imageshack.us/img413/3234/wpprob2.jpg
If it try to do a quick edit, I get this error:
http://img151.imageshack.us/img151/1310/wpprob.jpg

The weird thing is that even though the message is output, the page/post still get posted/updated.
It is just really annoying and I have no idea if this error is causing sme other error I’ve yet to discover.

Is there something wrong in my wp-conifg or something similar?
I’ve tried changing themes as well as deactivating all my plugins but there seems to be no fix.

Any and all help is kindly appreciated.
-Jose H.