"But the MRA are full of stories of men waking up after falling asleep drunk at parties to find women on top of them. And vqriations on th them of being forced to penetrate against their will. And, it might just be my misandry showing, but really? Does this happen a lot? Is it a really serious problem that needs to be addressed, and have equivilant resources given to it?"
There was a "National Intimate Partner and Sexual Violence Survey" (that's a PDF link, by the way) from the US in 2010 that is a favourite of the MRAs for the following reason: the number of women who were raped in the last twelve months, and the number of men who were 'made to penetrate' in the last twelve months, is about the same (1,270,000, and 1,267,000 respectively). The section with these figures starts on page 17.
The report defines 'Made To Penetrate' as including "times when the victim was made to, or there was an attempt to make them, sexually penetrate someone without the victim?s consent because the victim was physically forced (such as being pinned or held down, or by the use of violence) or threatened with physical harm, or when the victim was drunk, high, drugged, or passed out and unable to consent. Among women, this behavior reflects a female being made to orally penetrate another female?s vagina or anus. Among men, being made to penetrate someone else could have occurred in multiple ways: being made to vaginally penetrate a female using one?s own penis; orally penetrating a female?s vagina or anus; anally penetrating a male or female; or being made to receive oral sex from a male or female. It also includes female perpetrators attempting to force male victims to penetrate them, though it did not happen". I can't really see why this wouldn't come under the definition of rape myself, it reads like a pretty textbook case of non-consensual sex.
An interesting breakdown of the perpetrators for male victims: "the sex of the perpetrator varied by the type of sexual violence experienced. The majority of male rape victims (93.3%) reported only male perpetrators. For three of the other forms of sexual violence, a majority of male victims reported only female perpetrators: being made to penetrate (79.2%), sexual coercion (83.6%), and unwanted sexual contact (53.1%). For non-contact unwanted sexual experiences, approximately half of male victims (49.0%) reported only male perpetrators and more than one-third (37.7%) reported only female perpetrators (data not shown)".
So 79.2% of those 1,267,000 men who were 'made to penetrate' were the victims of female perpetrators. In other words, 1,003,464 men were raped by women in the last year, in the US. (If you consider 'being made to penetrate' to be raped, which I can't see how you wouldn't).