out of dynamic memory

Hi, Already search in the whole world, except here :D. When i access to some pages on my web site i get this error Fatal error: out of dynamic memory in yy_create_buffer() in Unknown on line 0 This maybe a memory problem, but it happens in pages that have just one connection to db and get a few results. Already changed the memory_usage fom 8 to 200, but the problem remains. This is not a coding problem, because i dont get this error on a previous host and it was been working for about a year. I'm getting tired of this. I dont have any clue of the problem If someone can help me thanks