wp_options table has gone WILD

I haven’t been using this plugin very long – 3 months – and I only have it set up to manually import from six different feeds. I have run the imports a total of perhaps a dozen times. It has imported 110 items in those three months, most of which are still sitting as drafts.

But in my wp_options folder, there are currently 109,848 enties that look like this:

option_name:
_pmxi_session_df155a420431320771f6d32bf2ff379a

option_value:
a:0:{}

autoload:
no

It’s my understanding that these are all related to this plugin.

Are all 109,848 entries REALLY necessary? Those entries have ballooned my options table alone to 20MB.

http://wordpress.org/plugins/wp-all-import/