Since the upgrade to Wordpress 2.7 the auto update doesn't work anymore for the plugins. Looks like the download works but the file can't be unpacked.
I just found out that after deactivating the Shared Items Plugin the auto update works again.
A list of the other plugins:
Active plugins:
Akismet 2.2.3
bs-wp-noversion 1.1
Dofollow 3.0
FeedBurner FeedSmith 2.3.1
Gurkis Subscribe To Comments 2.1.2 (an mod of Subscribe To Comments)
Infinite Scroll 1.1.2008.09.25
Limit Login Attempts 1.3
Ozh' Admin Drop Down Menu 3.1
Shared Items Post 1.3.0
Semmelstatz 3.1
WordPress Database Backup 2.2.2
WP Ajax Edit Comments 2.2.6.0
Inactive:
Fluency Admin 2.0
Lighter Menus 2.7.5
Maintenance Mode 4.2
Wordpress.com Stats 1.3.6
