Blog posts gone on blog page

This problem started when I deactivated socialize and installed & activated shareaholic, which didn’t work, nothing showed. Since then I’ve deactivated & uninstalled both of those plugins.

On the blog page in my custom theme: only the last post shows
Switching to 2011, NONE of posts show
Other issues now on blog page: the admin bar at the top of the page is gone, the right hand column that had a search bar & the company’s address has disappeared as well.

when viewing just one category, all posts in that category show, regardless of theme.

here’s what I’ve tried, all to no avail:
– deactivating all plugins (askimet, advanced excerpt, easing slider, jetpack, options framework, social media widget, wp database backup)
– switching back & forth between 2011 and 2010 and my theme
– rename the folder “plugins” to “plugins.hold”
– updating permalinks by choosing the default permalink structure or re-saving your current structure at Settings > Permalinks in your admin panel so that WordPress will rebuild the .htaccess file

any other ideas? thanks