But better still, please report this as a bug. We need to know and understand any problems like this in order to fix them. The details of what browser/OS/etc you have, in a bug report with screenshots and as much info as you can give, are very much appreciated.
Refresh button? Wikis generally refresh automatically. Ocassionally some special pages get stuck or take a while longer to update, and embeded templates may cause issues on article pages, but I don't know what you mean by "refresh button"
I don't think I have any acknowledgement. But the issue has subsided. If you want to know what happened, here it's is:
I log out of wikia, normally. When I turn my computer on, and I see I'm logged in, but it's NOT my account. It automatically logged me in to this other persons account. This happened several times, but has now subsided. I did nothing to the account, even though I could even check his preferences.
If you know any fix, or have anything to say Thad be great!
If it happens again, please let us know via Special:Contact (and if you don't get an acknowledgement email, let me know so I can check we got it.)
Please include as much information as possible, inclduing the other username, what wikia and what page you were on when you logged in, anything else you saw that was odd and so on, And ideally, please take a screenshot of what you see.
We've not had any other reports of this, so it's very odd and definitely something we want to investigate. Thanks!