| artist | disappointment | count | |
| 2010 Prog In General | Uk Christmas No. 1 Single Going To The X Factor - Again! | 1 | |
| 2010 Prog In General | Vibes Records, Bury, Uk Shutting Down | 1 | |
| 2010 Prog In General | No Symforce | 2 | |
| 2010 Prog In General | Nearfest Lineup For 2010 | 1 | |
| 2010 Prog In General | Insufficient Funds To Buy All The Music Available! | 1 | |
| 2010 Prog In General | Lack Of Prog Rock Concerts Locally | 1 | |
| 2010 Prog In General | A Lack Of Releases, Concerts - In All A Generally Weak Year | 7 | |
| A Day's Work | Split | 1 | |
| Agents Of Mercy | Dramarama | 4 | |
| Amplifier | The Octopus | 1 | |
| Anathema | We're Here Because We're Here | 2 | |
| Anthony Phillips | Ahead Of The Field Album | 1 | |
| Arena | No New Studio Album | 1 | |
| Arena | Rob Sowden Leaves | 1 | |
| Asia | Weak Second Cd (like Alpha In 1983) | 1 | |
| Asia | High Voltage Live Cd | 2 | |
| Big Big Train | No Live Dates | 1 | |
| Blackmore's Night | Autumn Sky Album | 1 | |
| Blind Guardian | At The Edge Of Time | 1 | |
| Brother Ape | A Rare Moment Of Insight | 1 | |
| Demians | Mute | 6 | |
| Dimmu Borgir | Abrahadabra | 1 | |
| Dream Theater | Mike Portnoy Leaving | 89 | |
| Echolyn | New Album Delay | 1 | |
| Elp | Only One Reunion Show | 1 | |
| Elp | High Voltage Performance | 3 | |
| Fish | No Album | 1 | |
| Gazpacho | Missa Atropos | 8 | |
| Genesis | No Reunion | 2 | |
| Glass Hammer | If | 7 | |
| Haken | Terrible Vocalist | 1 | |
| Hawkwind | Poor Live Performance | 1 | |
| Henryk Górecki | Died | 1 | |
| High Voltage Festival | | 1 | |
| Iluvatar | No New Album | 1 | |
| Iq | Martin Orford Not Rejoining Iq | 1 | |
| Iq | More Personal Changes Means New Cd Further Away.. | 1 | |
| Iq | Keyboard Player Leaving | 1 | |
| Iq | Gig At Zoetermeer On The 19th Of June 2010 | 1 | |
| Iron Maiden | The Final Frontier | 4 | |
| James Labrie | Bad Album | 2 | |
| Jethro Tull | No Activities | 1 | |
| Jimmy Eat World | Horrible New Album | 1 | |
| Jon Anderson / Rick Wakeman | The Living Tree | 5 | |
| Justin Bieber | I'm Disappointed Because ''something'' Like Justin Bieber Becomes Famous And Other Great Indie Artists Remain Unknown | 1 | |
| K2 | Black Garden | 1 | |
| Kamelot | Poetry For The Poisoned | 5 | |
| Karnataka | The Gathering Light | 1 | |
| Karnataka | Disbanding Of 'the Gathering Light' Line-up | 1 | |
| Keith Emerson | Tour Dates Deleted | 1 | |
| Kerry Livgren | Serious Illness | 1 | |
| King Crimson | Still No New Material In 2010 | 1 | |
| King Crimson | Rumour Of Disbanding | 2 | |
| Life Line Project | Distorted Memories | 1 | |
| Linkin Park | What's The Technoid Album ! Beurk ! | 1 | |
| Longshanks | The Return Of Longshanks | 1 | |
| Lunatic Soul | 2nd Album In 2010: Way Too Soft And Boring. | 1 | |
| Manning | Charlestown | 1 | |
| Marillion | Not Touring Usa | 1 | |
| Marillion | Disappointed About Musical Direction | 2 | |
| Marillion | No New Music | 2 | |
| Mick Pointers Marillion | Visiting A Concert Without Brian On Vocals | 1 | |
| Moon Safari | New Album Lover's End Is Poor | 1 | |
| Moongarden | Poor Live Performance | 1 | |
| Mostly Autumn | Heather Leaves Mostly Autumn | 1 | |
| Mostly Autumn | Go Well , Diamond Heart | 4 | |
| Neal Morse | No New Neal Morse Album | 1 | |
| Oceansize | Self Preserved While The Bodies Float Up | 2 | |
| Pain Of Salvation | Road Salt Two Postponed | 1 | |
| Pain Of Salvation | Road Salt One | 21 | |
| Pallas | Alan Reed Sacked | 1 | |
| Panic Room | Not Getting The Success They Deserve | 1 | |
| Pendragon | Quality Of High Voltage Apearance | 1 | |
| Peter Gabriel | Scratch My Back | 10 | |
| Peter Gabriel | Refusing To Show Up With Former Genesis Colleagues At The Ceremony At The Rock Hall Of Fame. | 1 | |
| Phideaux | Delay In Release Of 7.5 | 1 | |
| Phil Collins | Inability To Drum | 1 | |
| Phil Collins | Going Back | 3 | |
| Pink Floyd | No Album | 1 | |
| Porcupine Tree | No New Album | 2 | |
| Porcupine Tree | Poor Live Performance | 3 | |
| Porcupine Tree | Anesthetize Dvd | 2 | |
| Pure Reason Revolution | Hammer And Anvil | 7 | |
| Pure Reason Revolution | Disappointed About Hammer And Anvil | 2 | |
| Robert Plant | Band Of Joy | 1 | |
| Ronnie James Dio | Death | 11 | |
| Roswell Six | Terra Incognita: A Line In The Sand | 3 | |
| Roxy Music | New Album | 1 | |
| Rush | No Album / Concert | 1 | |
| Saga | The Human Condition | 1 | |
| Salem Hill | Pennies In The Karma Jar | 5 | |
| Spock's Beard | X Album | 3 | |
| Spock's Beard | Not Touring North America | 1 | |
| Star One | Victims Of The Modern Age | 5 | |
| Steven Wilson | Insurgentes Dvd | 2 | |
| Sunchild | The Wrap - A Big, Big Letdown | 1 | |
| Supertramp | No Roger Hodgson | 1 | |
| The Carpet Knights | According To Life… | 1 | |
| The Flower Kings | No Activity | 7 | |
| The Orb Ft. David Gilmour | Metallic Spheres | 3 | |
| The Pineapple Thief | Someone Here Is Missing | 3 | |
| The Pineapple Thief | Live Show At Pilton Working Mens' Club... | 1 | |
| The Reasoning | Losing So Many Of Their Members | 1 | |
| The Sword | Concert Cancelation In Copenhagen. | 1 | |
| Therion | Sitra Ahra | 1 | |
| Transatlantic | Volume Level At Transatlantic Show | 1 | |
| Transatlantic | Missing The Tour | 4 | |
| Transatlantic | The Whirlwind | 2 | |
| Unitopia | Artificial | 1 | |
| Us | Bad Vocals | 1 | |
| Woolly Wolstenholme | Woolly's Death | 5 | |
| Yes | No New Album | 1 | |
| Yes | On Tour Without Jon Anderson & Rick Wakeman | 5 | |
| Yes | Didn't Release An Album Again! | 1 | |
| Yngwie Malmsteen | Last Album Had Bad Quality On The Production And The Songs Very Repetitive, It Was Boring After The Second Track | 1 | |
| Yoso | Elements | 2 | |
| Yoso | Bad Live Shows | 2 | |