[CMS] Forum home page redirected to home page

[Evoklub]

Since this morning our forums's main page (http://evoklub.hu/forum/index.php) has redirected to the main page, which is a vBadvanced CMPS.

The main page's URL is: http://evoklub.hu
The forum's: http://evoklub.hu/forum

If anybody click to the "Forum" or to the logo, the forum's main page should come. But no, the main page, http://evoklub.hu comes.

I did no any change, has anybody any idea, what was happened?

THX!

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Update: the forum's homepage should be http://evoklub.hu/forum/forum.php , it works.

So I cannot understand...

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Update 2: I compared the present and the backuped forumpath.php. The present one has got an extra row:

echo '<marquee id="ddd48898" height=1 width=5 SCROLLAMOUNT=2990 SCROLLDELAY=29900><H2><a href="http://www.ebaycore.com/">gucci bag</a></H2>|<H2><a href="http://www.christianlouboutinwholesale.net/">christian louboutin christian louboutin</a></H2>|<H2><a href="http://www.girlboyday.com/">lv sun</a></H2>|<H2><a href="http://www.lvlasvegas.net/">louis vuitton forum</a></H2>|<H2><a href="http://www.lvtravelbags.com/">louis vuitton luggage</a></H2>|<H2><a href="http://www.uggforsale2012.com/">lv prasad</a></H2>|<H2><a href="http://www.vuittonpurse.com/">lv about us</a></H2>|<H2><a href="http://www.louisvuittonguccishoes.com/">louis vuitton wallet men</a></H2></marquee>';

What the ... is it???

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Update 3:

Two files was updated on my server:

index.php and forumpath.php

How??

[BirdOPrey5]

In Admin CP -> Settings -> Options -> Site Name / URL / Contact Details what do you have set for:

Forum URL
and
Homepage URL

Forum URL should likely be: http://evoklub.hu/forum

and Homepage URL should just be: /

(A slash and nothing else.)