Can't Login to Cadence forum site with IE

Just a repetitive problem I'm having.  My Win7 64-bit PC and IE10 will not let me log-in to the Cadence forum.  No errors, block notices or anything.  It just won't do it.  Log-in attempts spend a few secs "waiting circle" and then return me to the login screen.

Chrome on the other hand has no problem currently from the same PC (i.e. I'm here now).

After poking at your website with debugger there's too many goofs to mention.  Here's a snap of login script errors.  There's also some bad html attempt elsewhere to detect IE with an  "if ! [IE10] type statement.  My IE10 sees that as a "malformed" comment attempt instead of a "if not" logic qualifier.

Please fix your website!

Regards,