RSS Feed not automatically updating

Hi all,

I just search the forum and found some entries concerning RSS feed not updating automatically. But there was no solution so far. It's some days ago I started to add the portableapps.com RSS feed. If I reload the feed dynamic manually all works fine. But it's not downloded automatically. I've several other feeds that all work (checked it with wireshark).

I'm using the latest version of FF 3.6.10 on 2 different boxes with 2 different OS (XP and Win7) seeing the same behaviour.

Is there a solution?

Thanks.

CC