Since I ran Windows Update yesterday I had been having random BSODs (Reason: IRQL_GT_ZERO_AT_SYSTEM_SERVICE). After looking up the system event logs I found that before every BSOD there was a critical error in MSE, it was missing it's filter engine (not entirely sure, since I can not find the log entries anymore since I uninstalled MSE the log entries seem to have been removed, strange design choice). After maybe the 5th BSOD in a row and in a very short timespan I decided to remove MSE to see if it resolved the issue, it did. I also found that a file (stylesheet) I was working on was entirely filled with NULNULNUL so I pretty much lost all the work that went into that. This in particular I find to be very strange, I can't remember having something like that happen since the w2k years running FAT32 disks. Anyway, I thought it might be helpfull making a note of this issue with MSE here. Here is the list of updates I installed prior to the problems starting: KB2446709 5/15/2011 KB2483614 5/15/2011 KB2491683 5/15/2011 KB2497640 5/15/2011 KB2503658 5/15/2011 KB2506014 5/15/2011 KB2506212 5/15/2011 KB2506223 5/15/2011 KB2507618 5/15/2011 KB2508272 5/15/2011 KB2508429 5/15/2011 KB2509553 5/15/2011 KB2510531 5/15/2011 KB2511455 5/15/2011 KB2524375 5/15/2011 KB2533552 5/15/2011 KB2534366 5/15/2011 982861 5/15/2011 (IE9)

Hi, Out of curiosity. Have you tried reinstalling MSE and if so has it returned to normal functionality? CathalCathal O'Brien BSc, PgDip, PhD . Techsmart IT Support

Not as of yet but I was thinking about it (either that or switching to Avira Free edition, which is a fine product too). I'll reinstall MSE and update this thread with my experiences though I doubt the problems will return.

Not as of yet but I was thinking about it (either that or switching to Avira Free edition, which is a fine product too). I'll reinstall MSE and update this thread with my experiences though I doubt the problems will return. Has been running for about a full day now. Seems there's no problem with MSE anymore.