overfull vbox warning disable [duplicate]

Possible Duplicate:
How to suppress overfull hbox warnings up to some maximum?

I get many warnings like

Overfull \vbox (13.88728pt too high) detected at line 250


How can I remove/disable the warnings? I don't care about 13pt's of overfull. I believe it has to do with how I use mdframed and page breaks. It's not a big deal to have 13pts over. I'd like to either completely remove the warning or allow around 30pts of overfull for vbox before the warning occurs.

I've tried various things like

\pretolerance=10000
\tolerance=10000
\emergencystretch=30pt


But none have any effect.

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marked as duplicate by Gonzalo Medina, Martin Schröder, Marco Daniel, clemens, percusseAug 22 '12 at 3:09

You can change the value of \vfuzz in the preamble:
\vfuzz=30pt

\vfuzz controls the maximum overrun before overfull vbox messages occur. However, in my opinion, admitting 30pt overfull might be excessive.