I'm not sure if this is the right site to ask, so I apologise if it isn't, but here goes.
A while ago I started noticing some odd behaviour. My Gmail account was compromised, it seemed, and I had to change my password. So I did, and went on with my business. All fine and dandy, until about a week or two ago. My Skype name had suddenly changed to "Dick" instead of "Dirk". It couldn't have been any of my coworkers, considering my laptop hadn't been turned on prior to it happening. Later, the same thing happened to my Hotmail account, Hotmail claiming "there had been an unusual amount of spam and/or junk mail coming from my address". Ever since this point, I've been a little paranoid and changed every single important password.
It had gotten me a little curious, so I went out out of my way to regularly monitor the active connections and bandwidth usage. Most of the time, the usual: Skype, Chrome, my games etc. However, I was just checking again and there were an unusual amount of (assumingly) failing connections coming from the same IP address, with incrementing ports each time. I'm by no means an expert in networking (hence this question), but this most definitely raised a red flag for me.
Here's a screenshot of it. By the way, "Kan gegevens van de eigenaar niet verkrijgen" roughly means "Cannot retrieve data from the owner".
Should I be wary or am I fine? If I'm not, what should I do?
Thanks in advance.