Password Manager Software recommendations

[BSD Dude <bsdguy2000 () yahoo com>]

My users work with a fair number of systems and application which require unique log in credentials.  As a result, I am 
actively looking for a password manager to help secure and organize these credentials for my end-users.

Having spent some time researching available commercial options, I have found basically two types of products:

Enterprise level products that are primarily single sign-on solutions--which are not feasible in my environment; or 

Home user products that are basically all in one Internet security products--which are not suitable for my environment.

I am familiar with a few open source projects; however, there is a preference on the part of management to deploy a 
commercially supported/maintained solution; however, open source is not entirely out of the question (I really do not 
wish to start a debate on open vs. closed source security products). 

The basic general requirements are:

Easy to use for most non-technical end-users
Small resource footprint 
Easy to deploy
Use of AES, Two-fish, and/or Blowfish algorithms
Product must be actively supported/maintained for the foreseeable future (I am aware of the problems with this type of 
requirement)
Suitable for business/enterprise (MS Windows) environments

I'd appreciate some feedback/recommendations from those admins who have traveled down this path before.

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