Flickr frustration

hmmm, the iPhoto plug-in for Flickr seemed pretty cool. Then I hit my upload limit but that’s not the fault of the plug-in. So I upgraded my account there. Then when my PayPal payment cleared (or soon thereafter; i.e., today) I tried uploading a batch of photos and it keeps stalling out on the first one, no matter what size the batch.
A problem with the plug-in? A problem with iPhoto? A problem with me? Don’t know, but it’s annoying.