Everything I've found says its o.k. to delete it. I would certainly make a restore point first though. Have you tried Revo uninstaller? I highly recommend using it. (I've used the free version for years)
Download Revo Uninstaller Freeware - Free and Full Download - Uninstall software, remove programs, solve uninstall problems
The question is why was clearfi running and opening those ports. That makes me think it is time to check for infections. I have never used clearfi so I have limited knowledge of it. If it was my computer I would scan for infections.
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If you would like to do some scans and need help just ask.
Check these out.
GRC*|*Port Authority, for Internet Port 1900**
http://www.sevenforums.com/security-news/276235-upnp-networking-flaw-puts-millions-pcs-risk.html
Malwarebytes in a great program.
Here is what I use on my computer.
1. Microsoft Security Essentials anti virus
2. Windows 7 built in Firewall
3. Malwarebytes Anti Malware Pro
4. Super Anti Spyware on demand
5. FileHippo Update Checker on demand.
This works for me doing every day computing.
I use no torrents or P2P. Even with good security programs torrents or P2P will let things in your computer you don't want.
I use this program about once a month just to double check. No security program does it all.
Free Online Virus Scanner | ESET
Just a little note of caution. When downloading free programs be careful and read everything. Some sites are putting all kinds of extra things in the user agreement we never read.
Read through this and you will see what I mean. Many sites do these kinds of things not just Cnet.
http://www.sevenforums.com/general-discussion/277464-okay-i-tested-cnet-download-results.html
I most certainly have a lot to learn. That's why I here and a few other sites.
Check this one out. They are getting very sneaky.
http://www.sevenforums.com/news/278...h-problem-isolated-specific-manufacturer.html