http://paintingholidays.wordpress.com/ does exist for me.
So does http://paintingholidaysuk.wordpress.com/
Both exist as separate sites for me.
When it comes to access it's usually connectivity issues and/or browser related issues that are the problem. I cannot answer why this person or that person using this or that ISP, and this or that operating system, and this or that browser version, with either this or that settings enabled or disabled has access issues. We can only solve such issues if we have full computing environment details for each one.
I'm unable to help so I'll tag this thread for Staff assistance. Please subscribe to the thread so you are notified when they respond and please be patient while waiting.