j´ai trouvé ça en lisant the elder scrolls unofiicial pages (uesp.ent)
http://www.uesp.net/wiki/iki/Oblivion:Free_Skill_Boosts
"Bug
Note: This has been corrected by the Oblivion 1.1.511 patch.
In the original release of the game, all of these skill bonuses are subject to a bug, in which the skill level is increased without adding any experience points. Your character receives all the immediate benefits of the skill increase, but as time passes you will notice that the skill level appears frozen. This is most obvious in cases with large skill increases (in particular, the Oghma Infinium, Seed-Neeus´ training after A Shadow in Hackdirt, and watching Branwen and Salith train). This bug does not apply to the abilities listed in the following section.
What happens is that your character needs to gain all the missing experience points before the skill continues to level. For example, if your character had just reached skill level 45 in Hand to Hand, and Hand to Hand was a minor, non-specialized skill, it would normally take 695 punches (417 experience points) to get to level 50. If you watch Branwen and Salith train, your skill level is increased to 50 and you get all the immediate benefits of the skill increase (more damage done with blow, access to the journeyman power attacks, strength attribute bonuses when you next level up, etc.) The only thing that you´re missing is those 417 experience points: you still need to go and punch some creatures 695 times to get the missing experience. Until you do, the progress bar next to your Hand to Hand skill will be stuck at 0. With punch number 696, the progress bar will start to inch upwards; after a total of 847 punches, you will finally get to level 51. This is the exact same number of punches that you would have needed without getting the free skill boost. The glitch doesn´t make it take any longer to train the skill; the main problem is that there is no way to tell that you are actually accomplishing anything as long as your progress bar is stuck at zero. The free skill boost becomes more like a temporary bonus than a permanent bonus.
If you are in this predicament, you can continue to modify your skill in any of the usual ways:
* Drain Skill and Fortify Skill will modify your skill value but will have no effect on how much time you need to spend using the skill to get the missing experience.
* Skill Books and Trainers will increase your skill by one level, and will add one level´s worth of experience. You may end up having to spend a bit more time using the skill (training from 46 to 51 takes longer than training from 45 to 50), but no more than you would have had to if you had not received the free skill boost. "
je crois qu´il présente exactement ton probleme ;t u joue pas sur Pc s´est sur ,non?(ah oui sion le dernier l´aurais corrigé
)
enfin je te traduit
au cours de la premiere sortie du jeu, tout ces bonus talents sont sujet d´un bug, dont le le talent qui accroit sans que les points d´expérience necessaires soit atteint. ton perso reçoit immédiatement les points bonus de l´augmentation brusque du talent, mais avec le temps vous réalisez que ce talent reste comme "figé".
ceci arrive assez souvent lorsque-avec une qugmentation boust (en particulier , celle de Oghma Infinium,le point bonus de marchanddage deSeed-Neeus´ aprés la quete ombre sous coupeterre , et en regardant l´entrenement Branwen et Salith ).
ce qui se passe c´est que votre perso a besoin de récupérer les points d´expérience du talent en question manquants avant de pouvoir augmenter ce talent -ce que le boost ne donne pas de points bonus. par exemple, si ton perso vient juste d´atteindre 45 en combat à main nues, et ce talent est minime, celà devrait prendre 695 coups (417 points d´experience) pour etre niveau 50. si vous regardez Branwen et Salith se battre, votre talent augmente à 50 et vous aurez les effes immédiats de cette augmentation (ç-à-d plus de dégat infligées avec les mains nues,et avoir les capacités d´attaque d´un compagnon, attribution de bonus de puissance, etc.)
la seule chose qui vousn´aurez pas c´est 147 points d´éxpérience:
-fin de la traduction-...(je suis fatigé de traduire)
vous n´avez qu´a comblez la différence