What do these Logs mean?

[Jay]

[28/Apr/2006:06:59:28 -0500] "GET /thisdoesnotexistahaha.php HTTP/1.1" 404

[28/Apr/2006:06:59:28 -0500] "GET /horde/services/help/ HTTP/1.1" 404

[28/Apr/2006:06:59:28 -0500] "GET /horde-cvs/horde/services/help/ HTTP/1.1

[28/Apr/2006:06:59:28 -0500] "GET /pub/horde-cvs/horde/services/help/ HTTP/1.1

What do these mean? Was someone trying to access Horde mail and what is this "thisdoesnotexistahaha.php"

[IBBoard]

Looks very much like it. I've seen people trying to access various phpNuke, Mambo and other files on my sites that don't even run it - presumably to try to hack software.

As for the thisdoesnotexistahaha.php, did it have a referer on it? If it did then chances are it could be someone trying to log-spam you (get in your referers list and then get links from your site to theirs, if your logs were public, which very few people do now). Either that or its some random crazed weirdo!

[Jay]

I think it was someone look for a way in to my site. I noticed that my site was linked on a hackers site that was ready to be defaced, but when I checked to see if I was in the list I wasn't, must of been removed for some reason.