Spike in help calls - Captivate running on LMS

Just wondering if anyone else is experiencing and increase in the number of help calls regarding Captivate running on an LMS.

We have around 150 Captivate 4 courses, each having an average of 4 SCORM lessons. We have around 8,000 users. Our courses run on a hosted LMS (InquisiqR3). We were averaging around 300 calls per month. Calls are up about 25% now. Outside of the normal calls (forgot password, weak wireless connections, user errors) we've begun to receive calls on courses that have been running fine for the past 3 years, but are now freezing up in the middle of a lesson, not passing SCORM data to the LMS at the end of a lesson and displaying a variety of error message. Our LMS host says they have not made any changes. And we have made no changes to any of these courses. Browser issues is the only thing making any sense to me. With all the updates that are occuring with the browsers these days. I know IE9 is causing some issues with our courses and the cure is to switch to compatibility view. FireFox seems to come out with an update every month. Many of our users can't tell us what browser they're using (ie: "I'm using RoadRunner browser").....

Anyway, is anyone else experiencing Captivate and LMS issues. I'm looking for trends.

Thanks,

Dave