not scanning hidden files.
no option to clean submitted files list.
update is slow.
sandbox is not fully isolated.
cloud av alert is not quick.
no option to automatically save virus database to manual location which is available in kaspersky.
i SAVED trojan ransome from malware domain list from ie8 av detected.
i run tro.rans without saving from ie8, cis not detected but sandboxed,why?
cis is not fully developed.
Which version was you running and can you list the settings you had applied, am sure someone more experienced will come along to try and help you further. 
limited
stateful
safemode
custom policy
Which sandbox? The automatic sandbox is an access restriction type sandbox, (similar to Chromiums sandbox) but the manual sandbox is a fully virtualized environment.
If you are experiencing bugs, the only way they’re going to get fixed is by reporting them. Details in this thread: FORMAT & GUIDE - just COPY/PASTE it!
its automatic sandbox.
why this sandbox is not fully virtualized?
It will be in version 6.
Couple of suggestions for karthik1ee. Change execution from limited to either restricted of untrusted. This will give you tighter restriction on things that are autosandboxed. If you also haven’t done so change heuristics from low to medium.
I’m not sure why but when I test malware I get the option to clean, disinfect and quarintine.
The update can be slow but with the new smaller databases this should improve.
The cloud AV is going to be slower than an on-access scanner because it needs to be uploaded and sent through the cloud av and behavior blocker.
No really sure what you mean by scan hidden files? The current AV searchs for rootkits. You have to enable this option under the menu.
If you have any other concerns, feel free to comment.
CIS does. What makes you think it doesn’t?
no option to clean submitted files list.You can add that to the wish list in Wishlist - CIS board.
sandbox is not fully isolated.V6 will bring virtualization to the automatic sandboxing process. That has been mentioned at the forums many times.
cloud av alert is not quick.How long does the look up with you? How does it compare to competitors?
no option to automatically save virus database to manual location which is available in kaspersky.Cool option. Make it a wish in Wishlist - CIS board
i SAVED trojan ransome from malware domain list from ie8 av detected. i run tro.rans without saving from ie8, cis not detected but sandboxed,why?CIS does not use a web shield like also does not use a mail shield, or p2p shield or IM shield or whatever shields one could think of... It helps to keep CIS responsive. It is Comodo's point of view that catching the virus when it hits the hard drive or memory is enough.
cis is not fully developed.Please be more specific.
thanks…