feed doesn't import after first import

[DasJan]

Hi!

Another problem. I did one import from my Tumblr feed, immediately
after adding the feed it automatically imported ten items. Now I have
added two more items (one text, one youtube video) to my Tumblr feed
in the last five hours and those items are not being added to my
Gelato log, even though it is supposed to update every five minutes. I
already took a manual look at the feeds contents the new posts are
inside the RSS and I already searched this group but couldn't find a
good answer to this problem.

Any ideas?

Thanks,
Jan