The "Pro" in this suite's title means you get not only standard protection but also encryption tools, IM and mobile protection, plus some general PC tune-up tools. One particularly neat feature lets you remotely lock access to files if your laptop's stolen. If you don't need those features, you can save $30 and opt for the standard edition.

Whichever edition you go for, the important question is how well it protects you against malware - and the answer here is, sadly, not that well. In this month's malware tests, Trend Micro Internet Security found itself near the bottom of the rankings with a detection rate of 83% - an echo of the disappointing score it achieved when we first reviewed it.

And when it came to web threats, the package fared even worse, mustering a hit rate of just 9%. We were concerned to see it positively label as "safe" several pages identified by numerous other packages as hosting exploits.

And in some cases the software didn't give pages a rating at all, explaining that ‘Trend Micro has not tested this site'. This further dented our confidence in the package: why not test it now?

In terms of system resources, Trend Micro's suite wasn't terrifically light, but nor was it the most intrusive package. The user interface is simple enough, though a lot of information and controls are hidden away under collapsing bars.

And we did like the email integration, which added a new toolbar with various options and a wealth of anti-spam settings.

But at the end of the day these plus points can't make up for this suite's fundamental weakness at detecting threats - not even when you factor in all its neat extra features.