I started a game a day ago with quite some mods, I installed, updated and removed some more since I first installed skyrim when it was released.
Till whiterun it all ran pretty smooth but since then one major bug followed another one.
The Jarls man attacked me without reason, the fighters guild initial fight was totally bugged so vilkas couldnt be bested, and some other things, I quit and removed all skyrim related.

Before I make any new mod attempts, please post your combinations and if its stable or can you play without bugs?
Is STEP recommended and tested, or is it quite possible that it end in a bug infested game exp. ?

05/15/2012 11:21 AM 11,880 Acquisitive Soul Gems.esp
05/14/2012 01:47 PM API
05/15/2012 11:27 AM asi
06/09/2012 04:42 PM 11,533 ASIS Readme.html
06/09/2012 04:42 PM 218 ASIS-Dependency.esp
06/10/2012 08:45 PM 3,474,465 ASIS.esp
05/14/2012 12:40 PM 5,563 AT - Faster Arrows Improved +25%.esp
05/14/2012 12:40 PM 4,960 AT - Loot Arrows -25%.esp
05/14/2012 12:40 PM 1,466 AT - Merchants Arrows +50%.esp
05/14/2012 12:40 PM 3,010 AT - Progressive Damage (BS and CCO).esp
05/14/2012 12:40 PM 1,248 AT - Recover 35% Less Arrows.esp
05/14/2012 12:32 PM 317,337 Better Dynamic Snow.esp
06/11/2012 11:06 AM 0 bla
04/06/2012 04:57 PM 5,067,264 BOSS GUI.exe
04/06/2012 04:34 PM 2,141,184 BOSS.exe
06/09/2012 04:44 PM 4,537 BOSS.ini
06/09/2012 10:49 PM 2,944 changelog.txt
05/14/2012 11:56 AM 3,045 Cipscis - No NPC Greetings Readme.txt
05/28/2012 12:48 PM 86,013 Cloaks - No Imperial.esp
05/28/2012 12:48 PM 85,850 Cloaks - Player Only.esp
05/28/2012 12:48 PM 3,217 Cloaks v09 Location Readme.txt
05/28/2012 12:48 PM 7,892 Cloaks v09 Readme.txt
05/28/2012 12:48 PM 86,044 Cloaks.esp
05/14/2012 11:54 AM 234,237 Complete Crafting Overhaul - BS version.esp
01/01/2008 01:07 AM 627 Cowardly Frost - install before quest.esp
01/01/2008 01:05 AM 4,552 Cowardly horses.esp
01/01/2008 01:06 AM 536 Cowardly Shadowmere.esp
05/29/2012 03:41 PM 37,653 dD - Enhanced Blood Main.esp
01/01/2008 01:18 AM 17,480 Deadly Traps.esp
05/28/2012 04:32 PM 130,575,129 DeadlyDragons.bsa
05/28/2012 04:32 PM 117,122 DeadlyDragons.esp
05/28/2012 04:06 PM Docs
05/14/2012 12:05 PM 10,547,264 Dr_Bandolier.bsa
05/14/2012 12:05 PM 34,838 Dr_Bandolier.esp
05/14/2012 12:50 PM 10,212 DUEL - Combat Realism v4.1 Readme.txt
05/14/2012 12:50 PM 25,011 Duel - Combat Realism.esp
05/29/2012 03:41 PM 17,607 Enhanced Blood Textures.txt
05/15/2012 01:58 PM 47,480 GM-CookingRebalance.esp
05/15/2012 01:58 PM 93,112 GM-HMSPotions3SecsWeighted.esp
01/01/2008 01:08 AM 203 HorseMarker.esp
05/15/2012 01:58 PM 17,607 Hypothermia-README.txt
05/15/2012 01:58 PM 44,756 Hypothermia.esp
05/15/2012 11:28 AM Interface
06/09/2012 04:43 PM 7,009 LessDragons25.esp
02/03/2012 11:12 AM lib
05/15/2012 01:58 PM 1,299,032 mcCampingLite.bsa
05/15/2012 01:58 PM 47,535 mcCampingLite.esp
06/10/2012 08:44 PM meshes
05/14/2012 12:32 PM 41,216 Natural Skyrim Rain.esp
06/09/2012 04:57 PM 293 nighteyetoggle.esp
05/14/2012 12:05 PM Optional Files
01/01/2008 01:24 AM 1,581 PickaxeWeightReduction(5)v1.2.esp
01/02/2012 06:18 PM 1,046 PWR_Readme.txt
12/22/2011 09:46 AM 2,514 Read Me.txt
05/14/2012 11:52 AM 14,930 Readme - SkyUI.txt
05/15/2012 06:53 AM 10,823 Readme.html
05/29/2012 04:00 PM 10,738 ReadMe.txt
05/14/2012 11:25 AM Readmes
06/09/2012 10:49 PM 37,376 Readme_BasicNeeds.doc
06/09/2012 10:49 PM 5,591 Readme_BasicNeeds.txt
12/22/2011 09:46 AM 1,062 Readme_HiRes_Roadsigns3.txt
01/01/2008 01:15 AM 35,630 Realistic Lighting Patcher.esp
05/14/2012 12:32 PM 1,243,565 Realistic Lighting Patcher.jar
02/02/2012 05:58 PM 17,464 Realistic Lighting Readme.html
05/14/2012 12:32 PM 379,855 Realistic Lighting.esp
05/14/2012 12:32 PM 12,993 RealisticLighting.ini
05/14/2012 12:32 PM 12,993 RealisticLighting.ini.bak
02/02/2012 06:24 PM 12,909 Realistic_Lighting_Patcher.jar
05/14/2012 11:56 AM 218 Reduced Distance NPC Greetings.esp
01/01/2008 01:04 AM 658 RL - Lights B.esp
01/01/2008 01:21 AM 2,416 Sickly Diseases.esp
12/18/2011 11:14 PM SKSE
05/28/2012 04:08 PM 5,544 SkyMoMod Purist Lore-Friendly for v7 Readme.txt
05/28/2012 04:08 PM 1,200,852,617 SkyMoMod.bsa
05/28/2012 04:07 PM 414,461 SkyMoMod.esm
05/28/2012 04:08 PM 40,993 SkyMoMod_lists.esp
05/28/2012 12:30 PM SkyProc Patchers
02/03/2012 11:12 AM SkyProcDebug
06/09/2012 10:49 PM Skyrim
12/18/2011 10:50 PM 42,365,780 Skyrim - Animations.bsa
02/28/2012 07:14 PM 34,708,888 Skyrim - Interface.bsa
12/18/2011 10:51 PM 1,520,899,887 Skyrim - Meshes.bsa
03/20/2012 06:33 PM 177,465,775 Skyrim - Misc.bsa
03/20/2012 06:26 PM 25,690,987 Skyrim - Shaders.bsa
12/18/2011 10:51 PM 953,785,521 Skyrim - Sounds.bsa
12/18/2011 10:52 PM 1,388,866,502 Skyrim - Textures.bsa
12/18/2011 10:53 PM 1,458,554,685 Skyrim - Voices.bsa
12/18/2011 10:53 PM 13,016,190 Skyrim - Voicesixtra.bsa
05/14/2012 01:39 PM 17,654 Skyrim HD - README.txt
01/01/2008 01:00 AM 249,371,467 Skyrim.esm
05/29/2012 04:00 PM 234,184,497 SkyTEST-RealisticAnimals&Predators.bsa
05/29/2012 04:00 PM 673,236 SkyTEST-RealisticAnimals&Predators.esp
05/14/2012 11:48 AM 4,637 Smithing Perks Overhaul - Balanced.esp
05/28/2012 04:06 PM 178,106 SoS - The Dungeons.esp
05/28/2012 12:31 PM 347,460 SoS - The Wilds.esp
05/15/2012 06:53 AM sound
05/28/2012 04:06 PM 172,216 SoundsOfSkyrimTheDungeons_Readme.rtf
05/28/2012 04:06 PM 13,935 SoundsOfSkyrimTheDungeons_Readme.txt
05/28/2012 12:31 PM 90,285 SoundsOfSkyrimTheWilds_Readme.rtf
05/28/2012 12:31 PM 14,968 SoundsOfSkyrimTheWilds_Readme.txt
06/09/2012 04:47 PM Strings
05/29/2012 03:41 PM textures
05/28/2012 12:31 PM 136,635 The Dance of Death.esp
01/01/2008 01:29 AM 171 Timescale8.esp
06/09/2012 10:49 PM 82,548 TRO_BasicNeeds.esp
06/09/2012 10:49 PM 18,201 TRO_BasicNeeds_WATERPatch.esp
06/09/2012 07:49 PM 188,027 UFO - Ultimate Follower Overhaul.bsa
06/09/2012 07:49 PM 105,473 UFO - Ultimate Follower Overhaul.esp
05/14/2012 01:47 PM 88,215 Uninstall.exe
05/15/2012 06:53 AM 2,254,553 Unofficial Skyrim Patch.esp
03/20/2012 06:23 PM 14,140,334 Update.bsa
03/29/2012 07:06 PM 497,369 Update.esm
01/25/2012 07:48 PM 3 userlist.txt
01/01/2008 01:23 AM 2,557 VendorsHaveMoreMoney2000.esp
12/19/2011 03:44 PM Video
05/14/2012 02:04 PM 3,097 WATER - Get Wet.esp
05/14/2012 02:04 PM 340,371 WATER.esp
05/14/2012 11:50 AM 11,958 Weapons and Armor fixes - Hacks.esp
05/14/2012 11:50 AM 836,713 Weapons and Armor fixes.esp
01/01/2008 01:10 AM 314 Whistle.esp
+ this civil war mod