644 permission on Linux Minimus shared hosting

zom

I installed joomla in root website folder (not in the hiden folder provided) and have lot off problems with permissions (i have change and controll them all the time). But that's what I can do.
What I can't is some bunch of files that somehow got 644 permissions. I cant delete them, I can't change their permissions, I literally have to keep them! All I can do is to rename folder they are in.
But I wonder if  there is any proper way to remove them? They are temporary files generated by one of joomla plugin - are they like files-in-use secured or something? I'm not familiar with architecture of linux - I know just few commands and I feel helpless...

Have you opened a ticket via help@blacknight.com?

This can be due to various reasons but if you open a ticket and mark it for the attention of Alan I can help resolve it.