Google Not Indexing My New Posts

I had an issue with one of my WordPress blog with the Google indexing after posted new posts. Before, my posts were indexed within minutes, get indexed in Google within 5 minutes. But since May 2010 none of my latest posts getting indexed by Google. Google not indexing my WordPress blog posts again, GoogleBot just index home page and stopped indexing my new posts even after bookmarking them. Google is crawling the site just not adding the new posts (permalink not followed).

I am sure, I am not blocking the GoogleBot. I checked and I’m not doing any blocking. Also I tried to fetch as GoogleBot my posts by GoogleBot tool in Google Web Master Tools and the result was success, no crawl errors showed, but my problem not yet solved.

All posts are unique and site has decent amounts of backlinks too. My site is not hacked and I also don’t see any malware warning in google webmaster tools. I am using xml sitemap plugin and my new posts are shown in sitemap too.

Here are some information about blog that is in trouble
Publishing platform: WordPress
Wordpress version: 2.9.2 (latest)
Theme: Semiologic Reload
Plugins: WP Super Cache, Bsuite (bStat reports stopped since May,6), All in One SEO Pack, Akismet, Bad Behavior, Broken Link Checker, Dagon Design Sitemap Generator, Google Analytics, Google XML Sitemaps, SEO SearchTerms Tagging 2, Ultimate Plugins Smart Update Pinger, etc.
Permalink structure: %permalink%
My robots.txt file:

User-agent:  *
# disallow all files in these directories
Disallow: /cgi-bin/
Disallow: /z/j/
Disallow: /z/c/
Disallow: /stats/
Disallow: /dh_
Disallow: /wp-admin/
Disallow: /wp-includes/
Disallow: /contact/
Disallow: /tag/
Disallow: /wp-content
Disallow: /wp-content/themes/
Disallow: /trackback/
Disallow: /*?*
Disallow: */trackback/
Disallow: /wp-content/plugins/banner/cron.php

User-agent: Googlebot
# disallow all files ending with these extensions
Disallow: /*.php$
Disallow: /*.js$
Disallow: /*.inc$
Disallow: /*.css$
Disallow: /*.gz$
Disallow: /*.cgi$
Disallow: /*.wmv$
Disallow: /*.png$
Disallow: /*.gif$
Disallow: /*.jpg$
Disallow: /*.cgi$
Disallow: /*.xhtml$
Disallow: /*.php*
Disallow: */trackback*
Disallow: /*?*
Disallow: /z/
Disallow: /wp-*
Disallow: /wp-content/plugins/banner/cron.php
Disallow: /*/feed/$
Disallow: /*/feed/rss/$
Disallow: /wp-
Disallow: /search
Disallow: /feed
Disallow: /comments/feed
Disallow: /feed/$
Disallow: /*/trackback/$
Disallow: /*/*/feed/$
Disallow: /*/*/feed/rss/$
Disallow: /*/*/trackback/$
Disallow: /*/*/*/feed/$
Disallow: /*/*/*/feed/rss/$
Disallow: /*/*/*/trackback/$
#Allow: /wp-content/uploads/

# allow google image bot to search all images
User-agent: Googlebot-Image
Allow: /*
Disallow: /wp-content/plugins/banner/cron.php
# allow adsense bot on entire site
User-agent: Mediapartners-Google*
Disallow: /*?*
Allow: /z/
Allow: /about/
Allow: /contact/
Allow: /wp-content/
Allow: /tag/
Allow: /manual/*
Allow: /docs/*
Allow: /*.php$
Allow: /*.js$
Allow: /*.inc$
Allow: /*.css$
Allow: /*.gz$
Allow: /*.cgi$
Allow: /*.wmv$
Allow: /*.cgi$
Allow: /*.xhtml$
Allow: /*.php*
Allow: /*.gif$
Allow: /*.jpg$
Allow: /*.png$
Disallow: /wp-content/plugins/banner/cron.php

# disallow archiving site
User-agent: ia_archiver
Disallow: /
Disallow: /wp-content/plugins/banner/cron.php
# disable duggmirror
User-agent: duggmirror
Disallow: /
Disallow: /wp-content/plugins/banner/cron.php

Sitemap: http://xxxxxxxxx.com/sitemap.xml

What should I do to solve this problem?
Update: I solved my problem by changing my theme. Previously I have used Semi*l*gic theme

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