Is vBSEO compatible with Vista?

Since I added vBSEO to my vBulletin forum one of my members whose PC runs Vista has been experiencing problems. I hope it's just a co-incidence. He says:

I logged in this morning with "Remember Me". Everything looks fine on log in, but then I can access just one thread. After that, all links which are shown as thread titles yield a "Cannot connect to server at WAT.com" message and all links to last post in each thread yield "Connection was reset". Until I clear cookies in Firefox options and log in again, I can do nothing on the site. If I log in without "remember me", I can access several threads during the session, but when I log out the cookies are still left behind.

He is running Vista and these problems occur when using Firefox or IE7 browsers. I told him to log into the vbulletin.com/forums site using my login details:

In vbulletin forum, everything seems normal when logged in under your name. When I logged out, I got the message that all cookies had cleared - but they were still in my folder. It's the same with WAT: when I log out, I get a message that cookies are cleared, but unless I delete them manually in Firefox, they are still there. There are also cookies from www.ecb.co.uk and www.guardian.co.uk which seem to be undeletable in Firefox options.

He has cleared his computer of spyware, viruses etc. but the problem still happens. I run Windows XP and have not experienced this problem. I've had no complaint from other users. What could be causing this? A vbulletin team member reckons it's not Vista:

This is a ISP and an internet routing problem at first glance. He should flush the DNS on his computer. To do that he needs to press Windows+R then type cmd and hit OK in the dialog box. In the command prompt box he needs to type ipconfig /flushdns.

It is not a Vista problem.

Anybody here use Vista? Have you experienced any problem with your vBSEO site?

I cant see it being VBSEO in any way, Vista has alot of problems that I know of my self, I have installed this on alot of new systems and now people want XP back on.

The only thing I think it could be is the settings in his IE7 or a bug in IE7, he would be better trying FF or some others

I also can't see vista interfering with vbseo.. I've used vista and can navigate my forums just fine.

My wife is using vista for a long time and never faced any problems.

vbseo runs and the server. the user's OS doesn't matter.

Thanks for your feedback, guys. Unfortunately, the DNS flush didn't resolve the problem. It's very odd indeed considering he can browse the rest of the internet okay.

Ask you member to clear the cookies , clear browser history and clear all temporary files. After this ask him to restart his pc.