Various modules on my "Modules" page show up twice and even three times

I searched for some time trying to find if this issue had already been reported but I didn't see it anywhere so here goes.

Also, I wasn't sure which "Component" to classify this bug report as so I chose "other". Please correct as apprpropriate.

On my "Modules" page (mysite.com/admin/build/modules) where all installed modules (enabled or not) are listed, I have various modules that show up twice and even three times. The only step required for me to reproduce this bug is to visit, as user1, my "Modules" page. The expected behavior is for each installed module to only show up once on the "Modules" page.

An example of the bug can be seen on my "Modules" page under the CCK section where I see:

CCK
Enabled Throttle Name Version Description

Content
Content
Content Copy
Content Copy
Content Taxonomy
Content Taxonomy ActiveSelect
Content Taxonomy Autocomplete
...
Fieldgroup
Fieldgroup
Link
Node Reference
Node Reference
Number
Number
Option Widgets
Option Widgets
...

I have attached four (4) files to show you what I'm seeing. These files are titled:
Content and Content Copy show up twice
Fieldgroup, Node Reference, Number, etc show up twice
Flag content shows up three times
Latest Members shows up twice

Why are these modules showing up more than once and how can I fix this? I don't know whether or not the multiple module listings are creating any errors, but it would nevertheless be nice to get rid of the duplicate listings.

Thanks in advance for your help!
Walt