Problems staying logged in with Opera

Hopefully, I'm posting this question in the right place . . .

My new PC has hyperthreading, which causes blue screens scometimes in my firewall (Outpost) when I browse this site using IE. Frustrated with this, I decided to try Opera to see if browsing was more stable.

However, when I use Opera to browse this site, it doesn't keep me "logged in". In IE, I am automatically logged in when going to the main page (I use the browse with cookies site option), in Opera, I must enter my userID and password on the main page. The minute I leave the main page to read the forums, I appear to no longer be logged in.

I tried various searches about login problems and Opera, but didn't see anything in the forums that matches my problem. I double checked that I have cookies enabled in Opera, and even double-checked my antionline profile options.

Does anyone else use Opera, and if so, am I overlooking something else in either antionline or Opera settings that could cause this behavior? Is antionline even compatible with Opera?

Thanks

Are cookies turned on in the opera preferences?

Yes, cookies are turned on. It's really odd that it behaves as if cookies are being blocked.

In Preferences under Privacy, which boxes are checked and what options are selected for Cookies and Third-Party?? Perhaps one of those is inadvertantly releasing the cookie before it should??

<edit> I'm editing this from Opera 7.11 on Slackware and as you can see, having no problems. Perhaps there is a security setting or privacy setting that is turned on? What about firewall? Other apps?</edit>

Problem "fixed" . . . . even though I had "accept all" set at the master level, apparently you can manage cookies for each domain. I went in and checked all the boxes for antionline - which were oddly all unchecked (accept cookies for entire domain, accept illegal paths, etc) and suddenly it works.

It's odd that I would have to manually check those boxes, but I'm happy I'm able to log in now (posting this using opera!). Thanks to everyone who offered suggestions.