Yep
definately a full cache
BMP is the default image extension for Windows, so by defaulting to BMP, it lets you know your cache is full
To avoid this happening, open your browser, select TOOLS >> Internet Options
In the Temporary Internet Files section, click on SETTINGS, and set the amount of disk space to 10 (TEN) MB ... not 9 or not 11, but TEN and that the AUTOMATICALLY radio button is selected ... click OK, and click OK again ... reboot
Windows seems to manage the cache quite well on its own when set to 10MB
