The shadow is present to improve legibility with the transparent panel. 
My suggestion would be to add a separate radio button configuration option
to control the shadow with options enable/disable/auto.

Tim

> The problem is caused by enabling Transparency in the Panel configuration:
> Appearance, Panel Background, Enable Transparency.
>
> When Transparency is enabled, the clock font then displays with an
> outline/shadow.
>
> This does not happen in KDE. I can toggle Transparency in either mode in
> KDE and the clock font remains normal.
>
> Seems like a bug, but I'd like confirmation before filing a report in the
> bugzilla.
>
>> Additional info:
>>
>> When I enable the date and day of week, that part of the
>> clock display does not contain a shadow or outline. Only the
>> time portion of the display.
>>
>> I can toggle between Trinity and KDE and the outline/shadow
>> appears only in Trinity.
>>
>> > I installed the Trinity packages on a
>> > system where KDE 3.5.10 was installed. I was careful
>> to
>> > first manually remove the KDE packages before
>> installing the
>> > Trinity packages.
>> >
>> > I did not delete any user KDE profiles (~/.kde).
>> >
>> > User accounts have the clock configured in the
>> kicker/panel
>> > as Plain Clock (text) using the format H:MM a/pm. Font
>> style
>> > is Regular.
>> >
>> > With some user accounts, the clock font seems to use
>> a
>> > shadow or outline. Yet other accounts the font text
>> looks
>> > the same as in KDE 3.5.10 with no shadow or outline.
>> >
>> > Shadowing is not enabled in the Desktop configuration
>> > options.
>> >
>> > While not running Trinity, I deleted the clock config
>> file
>> > from ~/.kde/share/config. Deleting the file did not
>> > eliminate the shadow/outline.
>> >
>> > Any ideas what might be causing this behavior?
>> >
>> > Thanks.
>> >
>> > Darrell
>> >
>> >
>> >      
>> >
>>
>>
>>
>>
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>