Since a few days I have been noticing that I have some strange problems with my internet connection. I have not made any significant changes to the software / firewall settings / adapter settings on my computer (Windows 7) or the router+modem connecting me to the internet.
Description of the issues / additional info:
Trouble with establishing TCP connections (webpages often don't even start loading - but if they do [after numerous aborts/retrys] they load at normal speed)
Interrupted connections - Often, a webpage simply stops loading at about 50%
Most traffic-heavy programs seem to run fine (Skype, persistent Downloads, multiplayer video games work at the usual ping)
As long as the connection gets established properly, both ping and download rate seem to be as good as usual
Uploading seems to pose a problem (FTP client aborts connection mid-way, uploading forms in the browser often don't seem to work)
I run Windows 7, COMODO Firewall and use a Tilgin Vood Router/Modem.