[Sony Ericsson Xperia Mini, Mini Pro, Xperia Pro, A] Ticklefish:
Here's your code:

<?xml version="1.0" encoding="utf-8"?>
<com.android.systemui.statusbar.phone.PhoneStatusBarView android:orientation="vertical" android:id="@id/status_bar" android:background="@drawable/gradient_bg" android:focusable="true" android:fitsSystemWindows="true" android:descendantFocusability="afterDescendants"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:systemui="http://schemas.android.com/apk/res/com.android.systemui">
<ImageView android:id="@id/notification_lights_out" android:paddingLeft="6.0dip" android:paddingBottom="2.0dip" android:visibility="gone" android:layout_width="@dimen/status_bar_icon_size" android:layout_height="fill_parent" android:src="@drawable/ic_sysbar_lights_out_dot_small" android:scaleType="center" />
<LinearLayout android:orientation="horizontal" android:id="@+id/status_bar_contents" android:paddingLeft="6.0dip" android:paddingRight="6.0dip" android:layout_width="fill_parent" android:layout_height="fill_parent">
<RelativeLayout android:id="@id/Status_Bar_Left_Side" android:layout_width="0.0dip" android:layout_height="fill_parent" android:layout_weight="1.0">
<LinearLayout android:orientation="horizontal" android:id="@id/notification_icon_area" android:layout_width="0.0dip" android:layout_height="fill_parent" android:layout_weight="1.0">
<LinearLayout android:gravity="center" android:orientation="horizontal" android:id="@id/signal_battery_cluster" android:paddingLeft="1.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:paddingStart="2.0dip" >
</LinearLayout>
</LinearLayout>
<LinearLayout android:orientation="horizontal" android:id="@+id/Inside_Status_Bar_Left_Side" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentLeft="true">
<include android:id="@id/signal_cluster" android:layout_width="wrap_content" android:paddingRight="0.0dip" android:layout_height="wrap_content" android:layout_marginBottom="24.0dip" layout="@layout/gemini_signal_cluster_view" />
<com.android.systemui.statusbar.StatusBarIconView android:id="@id/moreIcon" android:visibility="gone" android:layout_width="@dimen/status_bar_icon_size" android:layout_height="wrap_content" android:layout_marginTop="24.0dip" android:src="@drawable/stat_notify_more" />
<com.android.systemui.statusbar.phone.IconMerger android:gravity="center_vertical" android:orientation="horizontal" android:id="@id/notificationIcons" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="24.0dip" android:layout_marginBottom="0.0dip" android:layout_alignParentLeft="true" />
</LinearLayout>
</RelativeLayout>
<com.android.systemui.statusbar.policy.Clock android:textAppearance="@style/TextAppearance.StatusBar.Expanded.Clock" android:gravity="center" android:id="@id/clock" android:layout_width="wrap_content" android:layout_height="fill_parent" android:singleLine="true" />
<RelativeLayout android:id="@+id/Status_Bar_Right_Side" android:layout_width="0.0dip" android:layout_height="fill_parent" android:layout_weight="1.0" android:layout_alignParentRight="true">
<LinearLayout android:orientation="horizontal" android:id="@+id/Inside_Status_Bar_Right_Side" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentRight="true">
<TextView android:textSize="16.0sp" android:gravity="right" android:textColor="@*android:color/white" android:id="@id/percentage" android:paddingLeft="2.0dip" android:visibility="gone" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="2.0dip" />
<ImageView android:id="@id/battery" android:gravity="right" android:paddingLeft="0.0dip" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="12.0dip" android:layout_marginRight="0.0dip" android:layout_marginStart="4.0dip" />
<LinearLayout android:orientation="horizontal" android:id="@+id/Inside_Status_Bar_Right_Side" android:layout_width="wrap_content" android:layout_height="fill_parent" android:layout_alignParentRight="true">
<LinearLayout android:orientation="horizontal" android:id="@id/system_icon_area" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="24.0dip" android:layout_marginBottom="0.0dip">
<LinearLayout android:gravity="center_vertical" android:orientation="horizontal" android:id="@id/statusIcons" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginBottom="0.0dip" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
</RelativeLayout>
</LinearLayout>
<LinearLayout android:orientation="horizontal" android:id="@id/ticker" android:paddingLeft="6.0dip" android:animationCache="false" android:layout_width="fill_parent" android:layout_height="fill_parent">
<ImageSwitcher android:id="@id/tickerIcon" android:layout_width="@dimen/status_bar_icon_size" android:layout_height="@dimen/status_bar_icon_size" android:layout_marginRight="4.0dip">
<com.android.systemui.statusbar.AnimatedImageView android:layout_width="@dimen/status_bar_icon_size" android:layout_height="@dimen/status_bar_icon_size" android:scaleType="center" />
<com.android.systemui.statusbar.AnimatedImageView android:layout_width="@dimen/status_bar_icon_size" android:layout_height="@dimen/status_bar_icon_size" android:scaleType="center" />
</ImageSwitcher>
<com.android.systemui.statusbar.phone.TickerView android:id="@id/tickerText" android:paddingTop="2.0dip" android:paddingRight="10.0dip" android:layout_width="0.0dip" android:layout_height="wrap_content" android:layout_weight="1.0">
<TextView android:textAppearance="@style/TextAppearance.StatusBar.PhoneTicker" android:layout_width="fill_parent" android:layout_height="wrap_content" android:singleLine="true" />
<TextView android:textAppearance="@style/TextAppearance.StatusBar.PhoneTicker" android:layout_width="fill_parent" android:layout_height="wrap_content" android:singleLine="true" />
</com.android.systemui.statusbar.phone.TickerView>
</LinearLayout>
</com.android.systemui.statusbar.phone.PhoneStatusBarView>

Consider using some vertical LinearLayouts instead of your RelativeLayouts. Yes, you could use RelativeLayouts but LinearLayouts would be so much clearer in this case.

Try this for your @id/Status_Bar_Left_side:

<LinearLayout android:orientation="vertical" android:id="@id/Status_Bar_Left_Side" android:layout_width="0.0dip" android:layout_height="fill_parent" android:layout_weight="1.0">
<LinearLayout android:orientation="horizontal" android:id="@id/notification_icon_area" android:layout_width="wrap_content" android:layout_height="0.0dip" android:layout_weight="1.0">
<LinearLayout android:gravity="center" android:orientation="horizontal" android:id="@id/signal_battery_cluster" android:paddingLeft="1.0dip" android:layout_width="wrap_content" android:layout_height="fill_parent" android:paddingStart="2.0dip" />
<include android:id="@id/signal_cluster" android:layout_width="wrap_content" android:paddingRight="0.0dip" android:layout_height="wrap_content" android:layout_marginBottom="24.0dip" layout="@layout/gemini_signal_cluster_view" />
</LinearLayout>
<LinearLayout android:orientation="horizontal" android:layout_width="wrap_content" android:layout_height="0.0dip" android:layout_weight="1.0">
<com.android.systemui.statusbar.StatusBarIconView android:id="@id/moreIcon" android:visibility="gone" android:layout_width="@dimen/status_bar_icon_size" android:layout_height="wrap_content" android:layout_marginTop="24.0dip" android:src="@drawable/stat_notify_more" />
<com.android.systemui.statusbar.phone.IconMerger android:gravity="center_vertical" android:orientation="horizontal" android:id="@id/notificationIcons" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_marginTop="24.0dip" android:layout_marginBottom="0.0dip" android:layout_alignParentLeft="true" />
</LinearLayout>
</LinearLayout>

Here we have a vertical LinearLayout that contains two horizontal LinearLayouts. Because those two Layouts have a layout weight of 1, they'll be the same exact height as each other.

Inside the first of these two Layouts, we have the signal icons.

Inside the second Layout, there's the notification icons.

You'll need to do something similar on the right side of the statusbar as well.