My picasa widget hasn’t been updated for quite a long time. Since then, there was a new widget API – the old widget worked without any problems because the new API is backward compatible, however those API calls are now deprecated. Meanwhile, I’ve received a lot of comments regarding the plugin and I’ve used that input to reshape the features of the update. Thank you all for your comments.
The new widget is a complete rewrite of the old widget. Earlier all options for plugin was in the widgets section. The new version adds a new options page to the “Settings” menu. Once you have installed the plugin, make sure to set your username on the picasa settings page. Once this is done, It’ll download the photo information and cache them. I’ve also added an option to list out the albums in this plugin. So, once the username is set, you can go to the widgets page and add any number of widgets – there you’ll get a list of albums, photo size and number of photos for each widget instance.
If you have uploaded new photos to the picasa albums, you can go to the options page and click on the “Refresh Cache” button to download new photos. Even if you have forgotten to do this, the photos will automatically get updated based on the cache lifetime you have set.
That’s all the features for now – I’ll add more features along the way once the base functionality of stable. Please remember, this is pretty much a complete rewrite, there might be few bugs here and there. If you have found any bugs, make a small comment here 
