html to prolog mode in XEmacs

[Paulo Henrique Baptista de Oliveira <baptista@cos.ufrj.br>]

	Hi Debian users,
	anyone knows why when I open a .html file in XEmacs and it enters in
html mode, if I press Tab key XEmacs enters in prolog mode?
	Thanks for any help,		Paulo Henrique
	PS: I'm using an older potato (2 months without update, because glibc2.1
and SOffice and xemacs 20.4