Hi All Configuration: Fedora core 2.6.11 . While booting i get the following error : ------------[ cut here ]------------ kernel BUG at mm/rmap.c:482! invalid operand: 0000 [#1] PREEMPT Modules linked in: CPU: 0 EIP: 0061:[<c014a31c>] Not tainted VLI EFLAGS: 00010286 (2.6.11.12-xenU) EIP is at page_remove_rmap+ I know people have observed this, but I could not find any fix anywhere. Do let me know if any more information like logs erc are needed. Thanks Jaikumar