I’ve found this topic. According to it, CIS will upload files up to 75MB. But when i wanted to upload some .CHM document, which is unrecognized by CIS and looks suspicious to me – it weights about 9,5 MB – CIS says this file is too big to be uploaded.
So i bet Comodo staff updated the file upload limits and shrinked it, right? So what limit is now? 5MB?