Something I think is that Flyingfisch computer and maybe even mobile devices are perfectly clean. However, somebody else in his house, such as his mom/dad/bro/sis/etc has an infected computer connected to the Internet. Parents and other family members are not always the most tech-savy people in the world (eg last year when my bro used my entire monthly bandwidth in one week due to forgetting to close torrents he finished downloading, and those torrents were seeding at over 100 KB/sec 24/7)

I don't think that's what it is, Cloudflare has specific messages if it's flagging someone for viruses or spam e-mails. I'm really not sure what it is, the only thing I can think of is his useragent.

Huh, well it only just started happening and i have been using linux since 2yr ago, so i dont think i am infected.

how do i get off the blacklist?

This is a result of the cloudflare service we use to distribute omni. That said, you don't have a dynamic IP (hehe, mod powers...), so it's probably the user agent thing Netham mentioned.

"In computing, a user agent is software (a software agent) that is acting on behalf of a user. For example, an email reader is a Mail User Agent, and in the Session Initiation Protocol (SIP), the term user agent refers to both end points of a communications session."
http://en.wikipedia.org/wiki/User_agent
In the case of a browser, the user agent string is an string that identifies what user agent is accessing the site.

Netham, geekboy or I could add you to the exceptions, but we need to figure out why you are getting this so often before we decide to actually do that. Could you check if your useragent is the default for your browser?

Hmm, your user agent looks good to me. I wonder if it is the ip or your provider that is causing the mistrust in cloudflare

It could be, or a virus on one of the computers, or someone in the past who used that ip address.

How much litterate are they about computer security though? Because there are people who are so dumb about computers (no offense to them, everyone gotta start somewhere and technology isn't everyone's cup of tea) that they'll click any link in their e-mail or they'll go anywhere on the Internet without bothering to make sure if it might be an unsafe site. I know myself that back in 2008-09 every month or two I had to help my bro get rid of viruses because he was using IE6 to go online and did not want to switch.