[Tex/LaTex] underfull \vbox

spacingvertical alignmentwarnings

What do the following messages mean?

LaTeX Font Info:    Try loading font information for U+msa on input line 205.
 ("C:\Program Files (x86)\MiKTeX 2.8\tex\latex\amsfonts\umsa.fd"
File: umsa.fd 2009/06/22 v3.00 AMS symbols A
)
LaTeX Font Info:    Try loading font information for U+msb on input line 205.

("C:\Program Files (x86)\MiKTeX 2.8\tex\latex\amsfonts\umsb.fd"
File: umsb.fd 2009/06/22 v3.00 AMS symbols B
)
LaTeX Font Info:    Try loading font information for U+lasy on input line 205.

("C:\Program Files (x86)\MiKTeX 2.8\tex\latex\base\ulasy.fd"
File: ulasy.fd 1998/08/17 v2.2e LaTeX symbol font definitions
)
LaTeX Font Info:    Try loading font information for U+rsfs on input line 205.

("C:\Program Files (x86)\MiKTeX 2.8\tex\latex\jknappen\ursfs.fd"
File: ursfs.fd 1998/03/24 rsfs font definition file (jk)
) [2] [3]
Underfull \vbox (badness 10000) has occurred while \output is active []

 [4]
[5] [6] [7] [8

] (C:\Users\acb\Desktop\Profissional\Tese\files\tese.toc
Underfull \vbox (badness 1242) has occurred while \output is active []

How can I fix the problem?

Best Answer

In the abstract it is nearly impossible to give advice on "underfull vbox" messages. They indicate a severe visual problem but often they are acceptable even if the number is high. However, 10000 is a value that should always be visually checked as it means infinitely bad (in TeX's eyes).

Here is the general advice that I give in the LaTeX Companion 2ed on this subject:

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