About auto log off and .blend files.

I have 2 questions and excuse me if they are answered.

Short time to auto log off even with ‘remember me’ checked. I’m using Opera with cookies and scripts enabled.Few times I’ve lost whole my post - strange.

When I want to download .blend file Opera says it’s .swf file - why? There is no problem with other sites that serve .blend files only here.

Thanks in advance for reply.