Come to Computerworld Knowledge Centers to keep up with all the latest news, analysis and opinions on key enterprise technologies and issues. An index of main Knowledge Centers with their current top news stories is below:

The U.S. government has spent about $700 million on IT and telecommunications products and services under its economic stimulus program, part of a total of $3 billion that's in the spending pipeline, according to a private analysis of this data. But how many jobs have been created is not as clear. View the entire Careers Knowledge Center 

Just a week after it last updated Firefox, Mozilla has rushed out a new version of its browser to fix a crash bug that programmers inadvertently introduced. View the entire Development Knowledge Center 

The U.S. government has spent about $700 million on IT and telecommunications products and services under its economic stimulus program, part of a total of $3 billion that's in the spending pipeline, according to a private analysis of this data. But how many jobs have been created is not as clear. View the entire Government Knowledge Center 

Gigabyte Technology issued a BIOS update on Friday that fixes a problem for some Windows 7 users who have been unable to sync their iPhones. View the entire Hardware Knowledge Center 

Two investment consulting companies laid out objections to Cisco Systems' $3 billion offer for Norwegian videoconferencing vendor Tandberg, saying in an open letter to Cisco and a press interview that the bid undervalues Tandberg. View the entire Management Knowledge Center 

Gigabyte Technology issued a BIOS update on Friday that fixes a problem for some Windows 7 users who have been unable to sync their iPhones. View the entire Mobile and Wireless Knowledge Center 

Just a week after it last updated Firefox, Mozilla has rushed out a new version of its browser to fix a crash bug that programmers inadvertently introduced. View the entire Networking and Internet Knowledge Center 

When it comes to security, using Windows can feel like living in the heart of a big city--the kind of place where you can install all the locks and alarms you want, but you still worry. The vast number of computer users who run Microsoft operating systems form the biggest, juiciest target cybercriminals could dream of. Which is why there are more than twenty-two million unique examples of Windows malware out there. View the entire Operating Systems Knowledge Center 

Just a week after it last updated Firefox, Mozilla has rushed out a new version of its browser to fix a crash bug that programmers inadvertently introduced. View the entire Security Knowledge Center 

When Microsoft releases the next version of its productivity suite, Office 2010, it will be into a very different competitive landscape than the one Office 2007 faced in late 2006. View the entire Servers and Data Center Knowledge Center 

As you know, Photo Booth includes a collection of image-altering effects you can use to distort your photos; just click the Effects button to see the collection of 24 effects, and to apply them to your photos. A subset of these effects (16 in all) are available in iChat, too, for use in creating some truly strange looking iChat image icons. But in case that's not enough effects for you, here's a way to add over 20 additional effects to both iChat and Photo Booth. View the entire Software Knowledge Center 

Two U.S. lawmakers have proposed legislation that would allow money from a huge fund that subsidizes telephone and mobile service to parts of the U.S. to also go for broadband deployment. View the entire Storage Knowledge Center