[XPERIA X2 General] Jolo_:
This is an updated list with details.

Marked as red = Possibly unstable/outdated/not necessary, not recommended to install.

Marked as orange = It's your choice to install.

Marked as green = Recommended/required to work.

* = I would install this cab, but jon55 doesn't

* = jon55 installs this cab, but I wouldn't.

__prod_date_setting.cab

Sony Ericsson Date Setting (Sets date and time to 05-01-2010).

_setupJbed.CAB

Installs Myriad Java.

aaa_xPlayNow-0.22.10.cab*

Sony Ericsson PlayNow.

aaa_youtube.CAB

Google YouTube (Outdated, new version on m.google.com).

AdobeReaderLE.CAB

Adobe Reader LE (Outdated, maybe there’s a better option out there).

AutoLockSettingsSetup.CAB

Enable Auto Lock feature (possibly with bugs).

AwoX_DMS_Setup_for_SEMC_win32-v08.cab

Installs AwoX Media Server.

BoingoMobile.CAB

Boingo Mobile (possibly outdated).

CABInstaller_R101.CAB*

Sony Ericsson CAB Installer (Possibly something related to PlayNow).

Camera_R210_RC2_39165.CAB

Sony Ericsson XperiaCamera.

Change_OTA_CP_Policy.cab*

Change the following settings on the registry. Maybe required.

http://technet.microsoft.com/en-us/library/cc182305.aspx

- Grant Manager system administrative privileges to other security roles. (4119)

- Allow or deny OMA Client Provisioning network PIN message. (4141)

- Allow or deny an OMA Client Provisioning user PIN or user MAC signed message. (4142)

- Allow or deny an OMA Client Provisioning user network PIN signed message. (4143)

ClearStorage.CAB

Installs the control panel icon in order to reset the phone to factory settings.

CommManagerCab.CAB

Installs Sony Ericsson Communicator Manager.

ConnectionSetup.CAB

Installs Connection Setup. (Still details needed, but possibly required)

DeviceInfo.CAB

Installs Sony Ericsson Device Information icon on Control Panel.

DRMWhiteList.CAB

Installs DRM Settings on Control Panel.

EnableMonitorNapDef_V10.CAB*

Sony Ericsson EnableNap (Possibly required)

http://msdn.microsoft.com/en-us/library/bb737406.aspx

FastGPSSetup.CAB

Sony Ericsson FastGPS (improves GPS fix)

FlashPanelAndMMIInstall.CAB

Sony Ericsson Flash Panel Package (Panels possibly unstable).

GoogleMaps_v3.2.1.16_icon.CAB

Google Maps (Very outdated, new version on m.google.com).

GooglePanel.CAB

Google Panel (Panels possibly unstable).

GrowingPanel.cab

Growing Panel (Panels on Spb MobileShell are unstable).

IdleModeText.CAB*

Returns the text to display when the system is in idle mode. (Possibly required).

IlluminationSvc.cab

Installs Ilumination Service (Lights and LEDs).

JMMS_Ver4.5.122_02Apr10_SE_PPC_653.cab

Installs Jataayu MMS client (Required for MMS).

MicAGCSetup.CAB

Instals AGC Microphone.

MobileDataSetup.CAB*

Installs Sony Ericsson Mobile Data App for setting Internet Access.

MonitorNapDefChange_V10.CAB*

Sony Ericsson NapCab. (Possibly required).

MyCPLSetup.CAB

Sony Ericsson MyCPL Setup. (Possibly required).

OEMNotif_R101.CAB

Sony Ericsson OEMNotif (Possibly required).

OJSettingsSetup.CAB*

Sony Ericsson Optical Joystick.

owp_es.cab*

Replace start pages on Internet Explorer (Language Localized).

PanelManager.CAB

Sony Ericsson Panel Manager (Panels possibly unstable).

PatternsSetup.CAB

Sets Ilumination Patterns on the illumination service.

PhoneSettings.CAB

Installs Phone Settings icon on Control Panel.

PixelCityDayPanel.cab

Pixel City Day Panel (Panels on Spb MobileShell are unstable).

PixelCityNightPanel.cab

Pixel City Night Panel. (Panels on Spb MobileShell are unstable).

PMBacklight.CAB

Installs Backlight and Power Management icon on Control Panel.

SE_StartMenuLandscape.cab

Enable Start Menu to work on landscape mode.

se_sync_cert.cab*

Installs Sony Ericsson Sync Cert.

SEMC_UserGuide_ES.cab

User Guide (Language specific).

SEMCFlashDeployment.CAB

Installs a Flash version from SE on the device (required by other CABs like Flash Panel to work).

SEMCSlideViewPluginInstaller.CAB

SlideView Plugins.

SEMCUtilityV4_4CAB.CAB

Possibly related to AutoLocker (possibly unstable).

SettingsPart1.CAB*

Related to Mobile Data App. Contains carriers info. Required.

SettingsPart2.CAB*

Related to Mobile Data App. Contains carriers info. Required.

Setup_BT_Ext.CAB

Sony Ericsson Bluetooth Settings (Required).

SetupSNM.CAB

Sony Ericsson SetupSNM (A lot of audio references, unknown, possibly

required).

SlideView.cab*

Sony Ericsson SlideView.

SonyEricsson_Emailsignature.CAB

Change E-Mail signature.

SpbMobileShell_vulcan3.arm.cab

Spb Mobile Shell (Extremely unstable and battery drainer).

SupportPanelCab.CAB

Support Panel (Panels possibly unstable).

SymSelectorSetup.CAB*

Enables SYM key on keyboard (required).

THSSetup.CAB*

Sony Ericsson Accesiblity (required).

TilewavePanel.CAB

TileWave Panel (Panels possibly unstable).

TimezoneSvc.CAB*

Time Zone Service.

TVOutManagement.CAB

Installs TV Out Management.

VTSetup.CAB

Installs Videocall (Required).

vulcan_pnp_install.cab

Sony Ericsson Sync Client.

wlan_1.5.cab.

Sony Ericsson WLAN (Required).

X2_Saturn.cab

Saturn Theme (Not really required).

X2_Saturn_Light.cab

Saturn Light Theme (Not really required).

X2_Titan.cab

Titan Theme. (Not really required).

XKeyHandler.CAB

X Key Handler (Enable function of the TitleWave/Panel Manager button).

XpFilterDeploy.cab

Some kind of audio filter (Possibly required).

XpFramework.cab

Sony Ericsson XpFramework (Possibly required).

zz010_Translations.CAB*

Sony Ericsson Mobile Comm Translations (Possibly required).

zz020_Translator.CAB*

Sony Ericsson Mobile Comm Translator-App (Possibly required).

zzCallNotifDllName.cab*

Unknown (possibly required).

zzHideUIRotation.cab*

SE Hide Orientation UI (Possibly required).

zzJMMSRegSetting.cab*

SE JMMSRegSetting (Possibly required).

zzSE_MSFT_Settings.cab*

Sony Ericsson MSFT Setting (Possibly required).

zzz010_Generic_Default.cab

Installs Sony Ericsson Sounds and Images (Required).

zzz015_MSFT_License_es.cab

License (Language Specific)

zzz020_content.cab

Installs some strange personalizations (but possibly required)

zzz023_startmenu_es.cab

Rename/move some icons (Language Localized)

zzz050_network.cab

Some personalizations refered to the network settings (possibly required).

zzzz_accelerometer_disable.cab

Disable Accelerometer. (Possibility required).

zzzz_camera_startmenu_move_down.cab

Camera Start Menu Move Down.

zzz954_Sony_US_V1.cab

Move Bing icon.

zzzz_fix_owp.cab

Sets start page.

zzzz_menu_reorder.cab

Reorder SlideView and Media icons.

zzzz_test_auto_ip.cab

Ensures Auto IP on Wi-Fi conection.

zzzzSEUS_VersionInfoSONEN.cab*

Register version Info.

zzzzz_OemNotif.cab

Register notification OEM.